Closed Bug 1798014 Opened 3 months ago Closed 2 months ago

Mousewheel scrolling disabled when hardware acceleration is enabled

Categories

(Core :: Widget: Win32, defect, P1)

Firefox 108
x86_64
Windows 10
defect

Tracking

()

VERIFIED FIXED
109 Branch
Tracking Status
firefox-esr102 --- unaffected
firefox106 --- unaffected
firefox107 --- unaffected
firefox108 --- disabled
firefox109 --- verified

People

(Reporter: underpass_bugzilla, Assigned: cmartin)

References

(Regression)

Details

(Keywords: regression)

Attachments

(4 files)

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:108.0) Gecko/20100101 Firefox/108.0

Steps to reproduce:

Open any website or any page longer than the screen size (example: www.repubblica.it). Verified also in the about:support page.

Actual results:

The mouse wheel scrolling has no effect.
If I restart the browser in safe-mode the issue doesn't happen.

Tried with a laptop with video card Intel(R) UHD Graphics 620 (0x8086,0x3ea0) with driver 31.0.101.1999 and also the former 30.x.

Expected results:

The mouse wheel scrolling should work as it worked until version 107.

The problem is also verified with a new testing profile with default settings and no extensions installed.

OS: Unspecified → Windows 10
Hardware: Unspecified → x86_64

The Bugbug bot thinks this bug should belong to the 'Core::Graphics: WebRender' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Component: Untriaged → Graphics: WebRender
Product: Firefox → Core

Can you run mozregression to determine what change caused this? https://mozilla.github.io/mozregression/

Hello,

I've tried to use mozregression but it seems to me that results are inconsistent.

  • With my "normal" user (not a local admin) and mozregression the problem is not verified (tried with builds from 10/14 to 10/28)
  • With my "normal" user the problem is immediately verified even with a new profile (that is, not my "usual" Nightly profile but a profile created for the test)
  • Logging on with another user (local admin) and a new profile the problem is not verified at all (even without mozregression)

Don't know what to think. Thanks.

Anyway, I've downloaded and tested all the version between 107 and current Nightly. The first one that verifies the problems is 20221027215515

http://ftp.mozilla.org/pub/firefox/nightly/2022/10/2022-10-27-21-55-15-mozilla-central-l10n/firefox-108.0a1.it.win64.zip

I've also tried to install it in another directory and the problem remains.

Thanks. Problem is solved when I configure preference security.sandbox.gpu.level set to 0.

In my opinion Bug 1347710 is the cause of the issue.

Regressed by: 1347710

:cmartin, since you are the author of the regressor, bug 1347710, could you take a look? Also, could you set the severity field?

For more information, please visit auto_nag documentation.

Flags: needinfo?(cmartin)
Keywords: regression
See Also: → 1798215

Underpass, if you revert security.sandbox.gpu.level to the default and set gfx.webrender.software=true does that fix the problem?

Flags: needinfo?(underpass_bugzilla)

(In reply to Jeff Muizelaar [:jrmuizel] from comment #9)

Underpass, if you revert security.sandbox.gpu.level to the default and set gfx.webrender.software=true does that fix the problem?

Hello. Yes, the problems seems to be fixed also forcing gfx.webrender.software to true.

See Also: → 1798265

Hi Underpass,

Could we please ask that you attach the troubleshooting info for your browser to this ticket? To do so, navigate to "about:support", click "Copy raw data to clipboard", and paste the result in the text box here.

Also -- Do you by any chance have Symantec Endpoint Protection installed on your machine?

Thanks!

Flags: needinfo?(cmartin)
Severity: -- → S3
Priority: -- → P1

Moving to Widgets, as it's almost-certainly some kind of Win32 messaging issue and not actually caused by GFX code

Assignee: nobody → cmartin
Status: UNCONFIRMED → ASSIGNED
Component: Graphics: WebRender → Widget: Win32
Ever confirmed: true

Also note that this isn't new or surprising -- Happened when we last tried to enable GPU sandbox 2 years ago. Hopefully this time we can root out the problem!

See Also: → 1630860
Duplicate of this bug: 1798265

(In reply to Chris Martin [:cmartin] from comment #11)

Hi Underpass,

Could we please ask that you attach the troubleshooting info for your browser to this ticket? To do so, navigate to "about:support", click "Copy raw data to clipboard", and paste the result in the text box here.

Sorry, I prefer not since this is a corporate computer. If you are looking for some information in particular I will try to share the part you are interested in.

Also -- Do you by any chance have Symantec Endpoint Protection installed on your machine?

Thanks!

And yes, I have the Symantec Endpoint Protection installed. I also tried to keep the services down with smc -stop but the problem remains.

Thanks!

Flags: needinfo?(underpass_bugzilla)

Davyd, if you set gfx.webrender.software = true while keeping security.sandbox.gpu = 1 and restart the browser does mouse wheel scrolling start working again?

Flags: needinfo?(davydm)

Also another thing that I've noticed: using the environment variable MOZ_DISABLE_GPU_SANDBOX (either set to 0 or to 1) the issue doesn't happen.

Duplicate of this bug: 1798215

Hi Underpass,

I understand and respect the hesitancy about publicly sharing info about the corporate machine. Would you be more comfortable either talking to me via DM on Matrix, or possibly through e-mail at cmartin@mozilla.com? This issue is very difficult to debug, and there are few people like yourself that are in a place where they can help us find the root cause.

Flags: needinfo?(underpass_bugzilla)

(In reply to Jeff Muizelaar [:jrmuizel] from comment #16)

Davyd, if you set gfx.webrender.software = true while keeping security.sandbox.gpu = 1 and restart the browser does mouse wheel scrolling start working again?

If I set those two values as per your request, mouse scrolling works as expected.

Flags: needinfo?(davydm)

Davyd, what about instead of setting gfx.webrender.software = true you reset that to false and set gfx.webrender.compositor = false while keeping security.sandbox.gpu = 1 and restarting the browser. Does mouse scrolling work then?

Flags: needinfo?(davydm)

Scrolling works with
gfx.webrender.software = false
gfx.webrender.compositor = false
security.sandbox.gpu = 1

Flags: needinfo?(davydm)

Hi Chris, I'll sent this information to you by email. Please do not share it. Thanks.

Thank you. Is it okay if I share it with a small number (<6) of other engineers within Mozilla that are also helping to fix this issue? I will ensure they also understand that this is sensitive data.

Also, if you could, you mentioned this is a corporate computer. We have also seen this issue before with other corporate computers, and we have a theory that you may all work for the same company. If possible, could you please include the name of the company that issued this computer to you? It may help us if we can work directly with the IT department of said company if-it-is-who-we-think-it-is.

No problem if you share this data with your team.
For your other request I'm sorry but I cannot fulfill it. Hope it is not so crucial for you and you will be still able to solve the problem without it.

Davyd, can you attach the graphics section of about:support when in the gfx.webrender.software = false, gfx.webrender.compositor = false, security.sandbox.gpu = 1 configuration?

Flags: needinfo?(davydm)

Davyd, can you also try:

gfx.webrender.software = false
gfx.webrender.compositor = false
security.sandbox.gpu = 1
apz.windows.force_disable_direct_manipulation = true

i.e. everything set to the default but apz.windows.force_disable_direct_manipulation = true

From my side, I tried to reproduce the issue with a "home" PC with Intel graphic card and the problem doesn't show up. Sorry.

Hi Underpass,

Thanks for the help so far. Another user, Gioxx, saw a difference 2 years ago between "installed" firefox and "portable" firefox. I am curious to see if you report this same behavior.

Please try the following:

  1. Download a portable Firefox Nightly here

  2. Unzip to your desktop

  3. Run Firefox and verify that the scroll wheel is working (this is what Gioxx experienced)

  4. Copy or move the directory from your desktop to your "C:\Program Files" directory

  5. Run Firefox and verify that the scroll wheel is now broken

Do your results match with that?

(In reply to Jeff Muizelaar [:jrmuizel] from comment #26)
> Davyd, can you attach the graphics section of about:support when in the `gfx.webrender.software = false, gfx.webrender.compositor = false, security.sandbox.gpu = 1` configuration?
(In reply to Jeff Muizelaar [:jrmuizel] from comment #26)
> Davyd, can you attach the graphics section of about:support when in the `gfx.webrender.software = false, gfx.webrender.compositor = false, security.sandbox.gpu = 1` configuration?

(In reply to Jeff Muizelaar [:jrmuizel] from comment #26)

Davyd, can you attach the graphics section of about:support when in the gfx.webrender.software = false, gfx.webrender.compositor = false, security.sandbox.gpu = 1 configuration?

Hope it's usable pasted like this:

Features
Compositing WebRender (Software)
Asynchronous Pan/Zoom wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled
WebGL 1 Driver WSI Info EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control
IsWebglOutOfProcessEnabled: 1
WebGL 1 Driver Renderer Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 1 Driver Version OpenGL ES 2.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 1 Driver Extensions GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_WEBGL_video_texture
WebGL 1 Extensions ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control
IsWebglOutOfProcessEnabled: 1
WebGL 2 Driver Renderer Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 2 Driver Version OpenGL ES 3.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 2 Driver Extensions GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_copy_texture_3d GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_multisample GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_OVR_multiview GL_OVR_multiview2 GL_WEBGL_video_texture
WebGL 2 Extensions EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_draw_buffers_indexed OES_texture_float_linear OVR_multiview2 WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Target Frame Rate 60
DirectWrite true (10.0.22000.258)
GPU #1
Active Yes
Description Intel(R) Iris(R) Xe Graphics
Vendor ID 0x8086
Device ID 0x46a6
Driver Version 31.0.101.3251
Driver Date 7-15-2022
Drivers <> igd10iumd64 igd10iumd64 igd12umd64 <> igd10iumd32 igd10iumd32 igd12umd32
Subsys ID 1a8c1043
RAM 0
GPU #2
Active No
Description NVIDIA GeForce RTX 3070 Ti Laptop GPU
Vendor ID 0x10de
Device ID 0x24a0
Driver Version 31.0.15.1694
Driver Date 7-21-2022
Drivers C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll
Subsys ID 1a8c1043
RAM 8192
Diagnostics
AzureCanvasBackend skia
AzureCanvasBackend (UI Process) skia
AzureContentBackend skia
AzureContentBackend (UI Process) skia
AzureFallbackCanvasBackend (UI Process) skia
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Display0 1920x1080@60Hz scales:1.000000|1.000000
Display1 1920x1080@60Hz scales:1.000000|1.000000
Display2 2560x1600@165Hz scales:1.000000|1.250000
DisplayCount 3
HardwareStretching both=3 window-only=0 full-screen-only=0 none=0 error=0
GPUProcessPid 17792
GPUProcess
Device Reset
ClearType Parameters \.\DISPLAY2 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \.\DISPLAY3 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \.\DISPLAY1 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ]
Decision Log
HW_COMPOSITING
available by default
disabled by user: Disabled by layers.acceleration.disabled=true
D3D11_COMPOSITING
unavailable by default: Hardware compositing is disabled
DIRECT2D
unavailable by default: Direct2D requires Direct3D 11 compositing
D3D11_HW_ANGLE
unavailable by default: D3D11 compositing is disabled
disabled by env: D3D11 compositing is disabled
GPU_PROCESS
available by default
WEBRENDER
available by default
unavailable-no-hw-compositing by runtime: Hardware compositing is disabled
WEBRENDER_COMPOSITOR
available by default
disabled by user: Disabled via gfx.webrender.compositor
unavailable by runtime: No DirectComposition usage
WEBRENDER_PARTIAL
available by default
WEBRENDER_SHADER_CACHE
available by default
unavailable by runtime: WebRender disabled
WEBRENDER_OPTIMIZED_SHADERS
available by default
unavailable by runtime: WebRender disabled
WEBRENDER_ANGLE
available by default
unavailable-no-angle by runtime: ANGLE is disabled
WEBRENDER_DCOMP_PRESENT
available by default
unavailable by runtime: Requires ANGLE
WEBGPU
disabled by default: Disabled by default
WINDOW_OCCLUSION
available by default
VP8_HW_DECODE
available by default
VP9_HW_DECODE
available by default
REUSE_DECODER_DEVICE
available by default
BACKDROP_FILTER
available by default

erk, sorry, I see I've posted this twice - when I was trying to post as an attachment, the site kept saying it wasn't working, and now there's 2x ):

Flags: needinfo?(davydm)

Davyd, the about:support that you posted suggests that layers.acceleration.disabled=true? Is that the case?

Flags: needinfo?(davydm)

(In reply to Chris Martin [:cmartin] from comment #29)

Hi Underpass,

Thanks for the help so far. Another user, Gioxx, saw a difference 2 years ago between "installed" firefox and "portable" firefox. I am curious to see if you report this same behavior.

Please try the following:

  1. Download a portable Firefox Nightly here

  2. Unzip to your desktop

  3. Run Firefox and verify that the scroll wheel is working (this is what Gioxx experienced)

  4. Copy or move the directory from your desktop to your "C:\Program Files" directory

  5. Run Firefox and verify that the scroll wheel is now broken

Do your results match with that?

Hi Chris, my Nightly is already a "portable", in the sense that I usually use the installer only for the Beta version and all the other ones (ESR, release and Nightly) I install extracting the installation directory from the .exe bundle or the zipfiles.

And just that version of Nightly is not working properly. If you want I can try to move the installation folder in the ProgramFiles directory.

Another oddity is that I cannot reproduce the error using the local admin account.

Hi Underpass,

That is great information! And very interesting about the admin account as well! We do have reason to believe that it's some kind of Windows "Access Control List" issue, so that does seem to further line-up.

I have a theory that this may be related to this "child compositor window" that we create in some circumstances. I have asked our Try Server to make a build for you here. Here is a link to the changes that I made -- Very simple, we just create the window now in all cases.

Could you please unzip this file, run Firefox, and confirm that it is now broken even if you revert security.sandbox.gpu.level to the default and set gfx.webrender.software=true?

Hello, when I set "gfx.webrender.software" to "true" (default value is "false") the issue doesn't show up both in the "normal" Nightly and in that special build in your last comment.
Hope this helps.

P.S. Can you please toggle the "needinfo" checkbox?

Flags: needinfo?(underpass_bugzilla)

(In reply to Jeff Muizelaar [:jrmuizel] from comment #34)

Davyd, the about:support that you posted suggests that layers.acceleration.disabled=true? Is that the case?

correct

Flags: needinfo?(davydm)

Davyd, can you reset it to the default (true)? Retest this configuration:

gfx.webrender.software = false
gfx.webrender.compositor = false
security.sandbox.gpu = 1
```
and attach the graphics section of about:support in that configuration?
Flags: needinfo?(davydm)
with
layers.acceleration.disabled = true
gfx.webrender.software = false
gfx.webrender.compositor = false
security.sandbox.gpu = 1

scrolling doesn't work

(also can confirm: flipping layers.acceleration.disabled back to false reinstates scrolling, with the other settings left as-is)

Flags: needinfo?(davydm)

(I may have introduced confusion with my first about:support paste as I use Nightly as my daily driver and not being able to scroll kinda sucks; & I didn't realise that was part of the diagnostics in about:support/graphics)

I realized that in comment 39 I wrote "default (true)" but the default is actually false.

Is the about:support in https://bugzilla.mozilla.org/show_bug.cgi?id=1798014#c40 with layers.acceleration.disabled=false or =true?

Flags: needinfo?(davydm)

as per the comment https://bugzilla.mozilla.org/show_bug.cgi?id=1798014#c40:

layers.acceleration.disabled = true
gfx.webrender.software = false
gfx.webrender.compositor = false
security.sandbox.gpu = 1

I feel like I'm mis-comunicating something though?

Flags: needinfo?(davydm)

With layers.acceleration.disabled = true the about:support should have something like:

HW_COMPOSITING
available by default
disabled by user: Disabled by layers.acceleration.disabled=true

I'm confused why that's not there. Did you restart after setting layers.acceleration.disabled=true?

Flags: needinfo?(davydm)

Ok, I think I've gotten something confused along the way. Let's do this all
over to be sure, with browser restarts in between:

Setup #1: Scrolling works

layers.acceleration.disabled = true (non-default)
gfx.webrender.software = false (default)
gfx.webrender.compositor = false (non-default)
security.sandbox.gpu = 1 (non-default)

about:support graphics:

Features
Compositing	WebRender (Software)
Asynchronous Pan/Zoom	wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled
WebGL 1 Driver WSI Info	EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync 
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control 
IsWebglOutOfProcessEnabled: 1
WebGL 1 Driver Renderer	Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 1 Driver Version	OpenGL ES 2.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 1 Driver Extensions	GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_WEBGL_video_texture 
WebGL 1 Extensions	ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info	EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync 
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control 
IsWebglOutOfProcessEnabled: 1
WebGL 2 Driver Renderer	Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 2 Driver Version	OpenGL ES 3.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 2 Driver Extensions	GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_copy_texture_3d GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_multisample GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_OVR_multiview GL_OVR_multiview2 GL_WEBGL_video_texture 
WebGL 2 Extensions	EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_draw_buffers_indexed OES_texture_float_linear OVR_multiview2 WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Target Frame Rate	60
DirectWrite	true (10.0.22000.258)
GPU #1
Active	Yes
Description	Intel(R) Iris(R) Xe Graphics
Vendor ID	0x8086
Device ID	0x46a6
Driver Version	31.0.101.3251
Driver Date	7-15-2022
Drivers	<> igd10iumd64 igd10iumd64 igd12umd64 <> igd10iumd32 igd10iumd32 igd12umd32
Subsys ID	1a8c1043
RAM	0
GPU #2
Active	No
Description	NVIDIA GeForce RTX 3070 Ti Laptop GPU
Vendor ID	0x10de
Device ID	0x24a0
Driver Version	31.0.15.1694
Driver Date	7-21-2022
Drivers	C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll
Subsys ID	1a8c1043
RAM	8192
Diagnostics
AzureCanvasBackend	skia
AzureCanvasBackend (UI Process)	skia
AzureContentBackend	skia
AzureContentBackend (UI Process)	skia
AzureFallbackCanvasBackend (UI Process)	skia
CMSOutputProfile	AAAMSExpbm8CEAAAbW50clJHQiBYWVogB84AAgAJAAYAMQAAYWNzcE1TRlQAAAAASUVDIHNSR0IAAAAAAAAAAAAAAAAAAPbWAAEAAAAA0y1IUCAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARY3BydAAAAVAAAAAzZGVzYwAAAYQAAABsd3RwdAAAAfAAAAAUYmtwdAAAAgQAAAAUclhZWgAAAhgAAAAUZ1hZWgAAAiwAAAAUYlhZWgAAAkAAAAAUZG1uZAAAAlQAAABwZG1kZAAAAsQAAACIdnVlZAAAA0wAAACGdmlldwAAA9QAAAAkbHVtaQAAA/gAAAAUbWVhcwAABAwAAAAkdGVjaAAABDAAAAAMclRSQwAABDwAAAgMZ1RSQwAABDwAAAgMYlRSQwAABDwAAAgMdGV4dAAAAABDb3B5cmlnaHQgKGMpIDE5OTggSGV3bGV0dC1QYWNrYXJkIENvbXBhbnkAAGRlc2MAAAAAAAAAEnNSR0IgSUVDNjE5NjYtMi4xAAAAAAAAAAAAAAASc1JHQiBJRUM2MTk2Ni0yLjEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFhZWiAAAAAAAADzUQABAAAAARbMWFlaIAAAAAAAAAAAAAAAAAAAAABYWVogAAAAAAAAb6IAADj1AAADkFhZWiAAAAAAAABimQAAt4UAABjaWFlaIAAAAAAAACSgAAAPhAAAts9kZXNjAAAAAAAAABZJRUMgaHR0cDovL3d3dy5pZWMuY2gAAAAAAAAAAAAAABZJRUMgaHR0cDovL3d3dy5pZWMuY2gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAZGVzYwAAAAAAAAAuSUVDIDYxOTY2LTIuMSBEZWZhdWx0IFJHQiBjb2xvdXIgc3BhY2UgLSBzUkdCAAAAAAAAAAAAAAAuSUVDIDYxOTY2LTIuMSBEZWZhdWx0IFJHQiBjb2xvdXIgc3BhY2UgLSBzUkdCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGRlc2MAAAAAAAAALFJlZmVyZW5jZSBWaWV3aW5nIENvbmRpdGlvbiBpbiBJRUM2MTk2Ni0yLjEAAAAAAAAAAAAAACxSZWZlcmVuY2UgVmlld2luZyBDb25kaXRpb24gaW4gSUVDNjE5NjYtMi4xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB2aWV3AAAAAAATpP4AFF8uABDPFAAD7cwABBMLAANcngAAAAFYWVogAAAAAABMCVYAUAAAAFcf521lYXMAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAKPAAAAAnNpZyAAAAAAQ1JUIGN1cnYAAAAAAAAEAAAAAAUACgAPABQAGQAeACMAKAAtADIANwA7AEAARQBKAE8AVABZAF4AYwBoAG0AcgB3AHwAgQCGAIsAkACVAJoAnwCkAKkArgCyALcAvADBAMYAywDQANUA2wDgAOUA6wDwAPYA+wEBAQcBDQETARkBHwElASsBMgE4AT4BRQFMAVIBWQFgAWcBbgF1AXwBgwGLAZIBmgGhAakBsQG5AcEByQHRAdkB4QHpAfIB+gIDAgwCFAIdAiYCLwI4AkECSwJUAl0CZwJxAnoChAKOApgCogKsArYCwQLLAtUC4ALrAvUDAAMLAxYDIQMtAzgDQwNPA1oDZgNyA34DigOWA6IDrgO6A8cD0wPgA+wD+QQGBBMEIAQtBDsESARVBGMEcQR+BIwEmgSoBLYExATTBOEE8AT+BQ0FHAUrBToFSQVYBWcFdwWGBZYFpgW1BcUF1QXlBfYGBgYWBicGNwZIBlkGagZ7BowGnQavBsAG0QbjBvUHBwcZBysHPQdPB2EHdAeGB5kHrAe/B9IH5Qf4CAsIHwgyCEYIWghuCIIIlgiqCL4I0gjnCPsJEAklCToJTwlkCXkJjwmkCboJzwnlCfsKEQonCj0KVApqCoEKmAquCsUK3ArzCwsLIgs5C1ELaQuAC5gLsAvIC+EL+QwSDCoMQwxcDHUMjgynDMAM2QzzDQ0NJg1ADVoNdA2ODakNww3eDfgOEw4uDkkOZA5/DpsOtg7SDu4PCQ8lD0EPXg96D5YPsw/PD+wQCRAmEEMQYRB+EJsQuRDXEPURExExEU8RbRGMEaoRyRHoEgcSJhJFEmQShBKjEsMS4xMDEyMTQxNjE4MTpBPFE+UUBhQnFEkUahSLFK0UzhTwFRIVNBVWFXgVmxW9FeAWAxYmFkkWbBaPFrIW1hb6Fx0XQRdlF4kXrhfSF/cYGxhAGGUYihivGNUY+hkgGUUZaxmRGbcZ3RoEGioaURp3Gp4axRrsGxQbOxtjG4obshvaHAIcKhxSHHscoxzMHPUdHh1HHXAdmR3DHeweFh5AHmoelB6+HukfEx8+H2kflB+/H+ogFSBBIGwgmCDEIPAhHCFIIXUhoSHOIfsiJyJVIoIiryLdIwojOCNmI5QjwiPwJB8kTSR8JKsk2iUJJTglaCWXJccl9yYnJlcmhya3JugnGCdJJ3onqyfcKA0oPyhxKKIo1CkGKTgpaymdKdAqAio1KmgqmyrPKwIrNitpK50r0SwFLDksbiyiLNctDC1BLXYtqy3hLhYuTC6CLrcu7i8kL1ovkS/HL/4wNTBsMKQw2zESMUoxgjG6MfIyKjJjMpsy1DMNM0YzfzO4M/E0KzRlNJ402DUTNU01hzXCNf02NzZyNq426TckN2A3nDfXOBQ4UDiMOMg5BTlCOX85vDn5OjY6dDqyOu87LTtrO6o76DwnPGU8pDzjPSI9YT2hPeA+ID5gPqA+4D8hP2E/oj/iQCNAZECmQOdBKUFqQaxB7kIwQnJCtUL3QzpDfUPARANER0SKRM5FEkVVRZpF3kYiRmdGq0bwRzVHe0fASAVIS0iRSNdJHUljSalJ8Eo3Sn1KxEsMS1NLmkviTCpMcky6TQJNSk2TTdxOJU5uTrdPAE9JT5NP3VAnUHFQu1EGUVBRm1HmUjFSfFLHUxNTX1OqU/ZUQlSPVNtVKFV1VcJWD1ZcVqlW91dEV5JX4FgvWH1Yy1kaWWlZuFoHWlZaplr1W0VblVvlXDVchlzWXSddeF3JXhpebF69Xw9fYV+zYAVgV2CqYPxhT2GiYfViSWKcYvBjQ2OXY+tkQGSUZOllPWWSZedmPWaSZuhnPWeTZ+loP2iWaOxpQ2maafFqSGqfavdrT2una/9sV2yvbQhtYG25bhJua27Ebx5veG/RcCtwhnDgcTpxlXHwcktypnMBc11zuHQUdHB0zHUodYV14XY+dpt2+HdWd7N4EXhueMx5KnmJeed6RnqlewR7Y3vCfCF8gXzhfUF9oX4BfmJ+wn8jf4R/5YBHgKiBCoFrgc2CMIKSgvSDV4O6hB2EgITjhUeFq4YOhnKG14c7h5+IBIhpiM6JM4mZif6KZIrKizCLlov8jGOMyo0xjZiN/45mjs6PNo+ekAaQbpDWkT+RqJIRknqS45NNk7aUIJSKlPSVX5XJljSWn5cKl3WX4JhMmLiZJJmQmfyaaJrVm0Kbr5wcnImc951kndKeQJ6unx2fi5/6oGmg2KFHobaiJqKWowajdqPmpFakx6U4pammGqaLpv2nbqfgqFKoxKk3qamqHKqPqwKrdavprFys0K1ErbiuLa6hrxavi7AAsHWw6rFgsdayS7LCszizrrQltJy1E7WKtgG2ebbwt2i34LhZuNG5SrnCuju6tbsuu6e8IbybvRW9j74KvoS+/796v/XAcMDswWfB48JfwtvDWMPUxFHEzsVLxcjGRsbDx0HHv8g9yLzJOsm5yjjKt8s2y7bMNcy1zTXNtc42zrbPN8+40DnQutE80b7SP9LB00TTxtRJ1MvVTtXR1lXW2Ndc1+DYZNjo2WzZ8dp22vvbgNwF3IrdEN2W3hzeot8p36/gNuC94UThzOJT4tvjY+Pr5HPk/OWE5g3mlucf56noMui86Ubp0Opb6uXrcOv77IbtEe2c7ijutO9A78zwWPDl8XLx//KM8xnzp/Q09ML1UPXe9m32+/eK+Bn4qPk4+cf6V/rn+3f8B/yY/Sn9uv5L/tz/bf//
Display0	1920x1080@60Hz scales:1.000000|1.000000
Display1	1920x1080@60Hz scales:1.000000|1.000000
Display2	2560x1600@165Hz scales:1.000000|1.250000
DisplayCount	3
HardwareStretching	both=3 window-only=0 full-screen-only=0 none=0 error=0
GPUProcessPid	15488
GPUProcess	
Device Reset	
ClearType Parameters	\\.\DISPLAY2 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \\.\DISPLAY3 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \\.\DISPLAY1 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] 
Decision Log
HW_COMPOSITING	
available by default
disabled by user: Disabled by layers.acceleration.disabled=true
D3D11_COMPOSITING	
unavailable by default: Hardware compositing is disabled
DIRECT2D	
unavailable by default: Direct2D requires Direct3D 11 compositing
D3D11_HW_ANGLE	
unavailable by default: D3D11 compositing is disabled
disabled by env: D3D11 compositing is disabled
GPU_PROCESS	
available by default
WEBRENDER	
available by default
unavailable-no-hw-compositing by runtime: Hardware compositing is disabled
WEBRENDER_COMPOSITOR	
available by default
disabled by user: Disabled via gfx.webrender.compositor
unavailable by runtime: No DirectComposition usage
WEBRENDER_PARTIAL	
available by default
WEBRENDER_SHADER_CACHE	
available by default
unavailable by runtime: WebRender disabled
WEBRENDER_OPTIMIZED_SHADERS	
available by default
unavailable by runtime: WebRender disabled
WEBRENDER_ANGLE	
available by default
unavailable-no-angle by runtime: ANGLE is disabled
WEBRENDER_DCOMP_PRESENT	
available by default
unavailable by runtime: Requires ANGLE
WEBGPU	
disabled by default: Disabled by default
WINDOW_OCCLUSION	
available by default
VP8_HW_DECODE	
available by default
VP9_HW_DECODE	
available by default
REUSE_DECODER_DEVICE	
available by default
BACKDROP_FILTER	
available by default

Setup #2: Scrolling does not work

layers.acceleration.disabled = false (default)
gfx.webrender.software = false (default)
gfx.webrender.compositor = false (non-default)
security.sandbox.gpu = 1 (non-default)

about:support graphics:

Features
Compositing	WebRender
Asynchronous Pan/Zoom	wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled
WebGL 1 Driver WSI Info	EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync 
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control 
IsWebglOutOfProcessEnabled: 1
WebGL 1 Driver Renderer	Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 1 Driver Version	OpenGL ES 2.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 1 Driver Extensions	GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_WEBGL_video_texture 
WebGL 1 Extensions	ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info	EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync 
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control 
IsWebglOutOfProcessEnabled: 1
WebGL 2 Driver Renderer	Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 2 Driver Version	OpenGL ES 3.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 2 Driver Extensions	GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_copy_texture_3d GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_multisample GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_OVR_multiview GL_OVR_multiview2 GL_WEBGL_video_texture 
WebGL 2 Extensions	EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_draw_buffers_indexed OES_texture_float_linear OVR_multiview2 WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Direct2D	true
Target Frame Rate	60
DirectWrite	true (10.0.22000.258)
GPU #1
Active	Yes
Description	Intel(R) Iris(R) Xe Graphics
Vendor ID	0x8086
Device ID	0x46a6
Driver Version	31.0.101.3251
Driver Date	7-15-2022
Drivers	<> igd10iumd64 igd10iumd64 igd12umd64 <> igd10iumd32 igd10iumd32 igd12umd32
Subsys ID	1a8c1043
RAM	0
GPU #2
Active	No
Description	NVIDIA GeForce RTX 3070 Ti Laptop GPU
Vendor ID	0x10de
Device ID	0x24a0
Driver Version	31.0.15.1694
Driver Date	7-21-2022
Drivers	C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll
Subsys ID	1a8c1043
RAM	8192
Diagnostics
AzureCanvasBackend	direct2d 1.1
AzureCanvasBackend (UI Process)	skia
AzureContentBackend	skia
AzureContentBackend (UI Process)	skia
AzureFallbackCanvasBackend (UI Process)	skia
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Display0	1920x1080@60Hz scales:1.000000|1.000000
Display1	1920x1080@60Hz scales:1.000000|1.000000
Display2	2560x1600@165Hz scales:1.000000|1.250000
DisplayCount	3
HardwareStretching	both=3 window-only=0 full-screen-only=0 none=0 error=0
SwapChainTearingSupport	Supported
GPUProcessPid	35564
GPUProcess	
Device Reset	
ClearType Parameters	\\.\DISPLAY2 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \\.\DISPLAY3 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] \\.\DISPLAY1 [ Gamma: 1.8 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50 ] 
Decision Log
HW_COMPOSITING	
available by default
D3D11_COMPOSITING	
available by default
DIRECT2D	
available by default
D3D11_HW_ANGLE	
available by default
GPU_PROCESS	
available by default
WEBRENDER	
available by default
WEBRENDER_COMPOSITOR	
available by default
disabled by user: Disabled via gfx.webrender.compositor
WEBRENDER_PARTIAL	
available by default
WEBRENDER_SHADER_CACHE	
available by default
WEBRENDER_OPTIMIZED_SHADERS	
available by default
WEBRENDER_ANGLE	
available by default
WEBRENDER_DCOMP_PRESENT	
available by default
WEBGPU	
disabled by default: Disabled by default
WINDOW_OCCLUSION	
available by default
HW_DECODED_VIDEO_ZERO_COPY	
available by default
VP8_HW_DECODE	
available by default
VP9_HW_DECODE	
available by default
REUSE_DECODER_DEVICE	
available by default
BACKDROP_FILTER	
available by default
Flags: needinfo?(davydm)

Ok, that make more sense. Can you also recheck and post the gfx section of about:support for:

layers.acceleration.disabled = false (default)
gfx.webrender.software = true (non-default)
gfx.webrender.compositor = true (default)
security.sandbox.gpu = 1
Flags: needinfo?(davydm)

Setup #3: Scrolling works

layers.acceleration.disabled = false (default)
gfx.webrender.software = true (non-default)
gfx.webrender.compositor = true (default)
security.sandbox.gpu = 1 (non-default)

about:support graphics:

Features
Compositing	WebRender (Software D3D11)
Asynchronous Pan/Zoom	wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled; smooth pinch-zoom enabled
WebGL 1 Driver WSI Info	EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync 
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control 
IsWebglOutOfProcessEnabled: 1
WebGL 1 Driver Renderer	Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 1 Driver Version	OpenGL ES 2.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 1 Driver Extensions	GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_WEBGL_video_texture 
WebGL 1 Extensions	ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_float_blend EXT_frag_depth EXT_shader_texture_lod EXT_sRGB EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_element_index_uint OES_fbo_render_mipmap OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
WebGL 2 Driver WSI Info	EGL_VENDOR: Google Inc. (Intel)
EGL_VERSION: 1.5 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_display_semaphore_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_ANGLE_create_context_extensions_enabled EGL_ANDROID_blob_cache EGL_ANDROID_recordable EGL_ANGLE_image_d3d11_texture EGL_ANGLE_create_context_backwards_compatible EGL_KHR_create_context_no_error EGL_KHR_reusable_sync 
EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_device_query EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_platform_angle_d3d11on12 EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_KHR_debug EGL_ANGLE_explicit_context EGL_ANGLE_feature_control 
IsWebglOutOfProcessEnabled: 1
WebGL 2 Driver Renderer	Google Inc. (Intel) -- ANGLE (Intel, Intel(R) Iris(R) Xe Graphics Direct3D11 vs_5_0 ps_5_0, D3D11-31.0.101.3251)
WebGL 2 Driver Version	OpenGL ES 3.0.0 (ANGLE 2.1.15728 git hash: 6a5622459d2c)
WebGL 2 Driver Extensions	GL_ANGLE_base_vertex_base_instance GL_ANGLE_client_arrays GL_ANGLE_copy_texture_3d GL_ANGLE_depth_texture GL_ANGLE_explicit_context GL_ANGLE_explicit_context_gles1 GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_get_serialized_context_string GL_ANGLE_get_tex_level_parameter GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_memory_size GL_ANGLE_multi_draw GL_ANGLE_multiview_multisample GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_provoking_vertex GL_ANGLE_request_extension GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_multisample GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_lose_context GL_CHROMIUM_sync_query GL_EXT_EGL_image_external_wrap_modes GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_float_blend GL_EXT_frag_depth GL_EXT_instanced_arrays GL_EXT_map_buffer_range GL_EXT_multisampled_render_to_texture GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_bptc GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_KHR_no_error GL_KHR_parallel_shader_compile GL_KHR_robust_buffer_access_behavior GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_EAC_R11_signed_texture GL_OES_compressed_EAC_R11_unsigned_texture GL_OES_compressed_EAC_RG11_signed_texture GL_OES_compressed_EAC_RG11_unsigned_texture GL_OES_compressed_ETC2_RGB8_texture GL_OES_compressed_ETC2_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_RGBA8_texture GL_OES_compressed_ETC2_punchthroughA_sRGB8_alpha_texture GL_OES_compressed_ETC2_sRGB8_alpha8_texture GL_OES_compressed_ETC2_sRGB8_texture GL_OES_depth24 GL_OES_depth32 GL_OES_draw_buffers_indexed GL_OES_draw_elements_base_vertex GL_OES_element_index_uint GL_OES_fbo_render_mipmap GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_border_clamp GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_texture_stencil8 GL_OES_vertex_array_object GL_OVR_multiview GL_OVR_multiview2 GL_WEBGL_video_texture 
WebGL 2 Extensions	EXT_color_buffer_float EXT_float_blend EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic MOZ_debug OES_draw_buffers_indexed OES_texture_float_linear OVR_multiview2 WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
Direct2D	true
Target Frame Rate	60
DirectWrite	true (10.0.22000.258)
GPU #1
Active	Yes
Description	Intel(R) Iris(R) Xe Graphics
Vendor ID	0x8086
Device ID	0x46a6
Driver Version	31.0.101.3251
Driver Date	7-15-2022
Drivers	<> igd10iumd64 igd10iumd64 igd12umd64 <> igd10iumd32 igd10iumd32 igd12umd32
Subsys ID	1a8c1043
RAM	0
GPU #2
Active	No
Description	NVIDIA GeForce RTX 3070 Ti Laptop GPU
Vendor ID	0x10de
Device ID	0x24a0
Driver Version	31.0.15.1694
Driver Date	7-21-2022
Drivers	C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumdx.dll C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll,C:\Windows\System32\DriverStore\FileRepository\nvami.inf_amd64_0c50dc64ed3c91bc\nvldumd.dll
Subsys ID	1a8c1043
RAM	8192
Diagnostics
AzureCanvasBackend	direct2d 1.1
AzureCanvasBackend (UI Process)	skia
AzureContentBackend	skia
AzureContentBackend (UI Process)	skia
AzureFallbackCanvasBackend (UI Process)	skia
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GPU_PROCESS	
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WEBRENDER	
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WEBRENDER_COMPOSITOR	
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WEBRENDER_PARTIAL	
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WEBRENDER_SHADER_CACHE	
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WEBRENDER_ANGLE	
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WEBRENDER_DCOMP_PRESENT	
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WINDOW_OCCLUSION	
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VP8_HW_DECODE	
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VP9_HW_DECODE	
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Flags: needinfo?(davydm)

I might have experienced this bug. The timeline is approximately the same (scrolling broke about a week ago), and the various about:config changes similarly provoke or remedy it. Does anyone experiencing this use a utility called "X-Mouse Button Control", or some similar mouse remapping software? I discovered that one of the options ("Make scroll wheel scroll window under cursor") triggers it.

WORKS:

*** gfx.webrender.compositor = false
    gfx.webrender.software = false
*** layers.acceleration.disabled = true
    security.sandbox.gpu.level =1

WORKS:

    gfx.webrender.compositor = true
*** gfx.webrender.software = true
    layers.acceleration.disabled = false
    security.sandbox.gpu = 1

BROKEN when X-Mouse Button Control option is enabled:

*** gfx.webrender.compositor = false
    gfx.webrender.software = false
    layers.acceleration.disabled = false
    security.sandbox.gpu.level = 1

BROKEN when X-Mouse Button Control option is enabled:

    gfx.webrender.compositor = true
    gfx.webrender.software = false
    layers.acceleration.disabled = false
    security.sandbox.gpu = 1

Can confirm: I also use X-MouseButton control, and the setup is a little unclear (it has a checkbox: [ ] Disable Scroll Window Under Cursor, which probably should be labelled [ ] Disable XMBC Scroll Window Under Cursor - checking this makes scrolling with default FF options work - and in addition, I'd had some windows (modern-ui) apps not respond to scrolling (not all of them though, so I was perplexed, and i use so few of them that i didn't connect the dots) - these are also fixed by checking that box.

(In reply to Davyd McColl from comment #50)

Can confirm: I also use X-MouseButton control, and the setup is a little unclear (it has a checkbox: [ ] Disable Scroll Window Under Cursor, which probably should be labelled [ ] Disable XMBC Scroll Window Under Cursor - checking this makes scrolling with default FF options work - and in addition, I'd had some windows (modern-ui) apps not respond to scrolling (not all of them though, so I was perplexed, and i use so few of them that i didn't connect the dots) - these are also fixed by checking that box.

Thanks! I also use XBMC to disable mouse buttons 5 and 6 and checking that options seems to solve the problem. I've never configured that option and until now it hasn't interfered with mouse wheel scrolling in Firefox.

This might strictly be a bug on XBMC's side (assuming everyone else reporting this is using XBMC), but it may be worth working around on Firefox's side anyway. It has certainly caught the Windows PowerToys people a number of times, judging from how many scrolling issues have been reported on their repo: https://github.com/microsoft/PowerToys/issues/3400

The alternatives to fixing this are ignoring the bug as WONTFIX (user's system is configured wrong, not Firefox's fault), or reporting the bug on the XBMC forums and hope they can fix their software or at least change the default.

I have logged an issue on the XMBC forums (https://forums.highrez.co.uk/viewtopic.php?t=4624) so I guess the best we can do is chalk this up to user config error.

Thanks. I would like to know if even the "old" problem reported with this option also was related to XMBC settings.

Flags: needinfo?(cmartin)

@Underpass By "old problem", you mean the original issue that Gioxx had?

Ciao Giovanni -- We're all dying to know: Were you using "X-Mouse Button Control" on the machine that you had the scroll wheel issues on?

Flags: needinfo?(cmartin) → needinfo?(gf.solone)

(In reply to Chris Martin [:cmartin] from comment #55)

@Underpass By "old problem", you mean the original issue that Gioxx had?

Yes, thanks. Sorry if I was unclear.

(In reply to Chris Martin [:cmartin] from comment #55)

Ciao Giovanni -- We're all dying to know: Were you using "X-Mouse Button Control" on the machine that you had the scroll wheel issues on?

Ehi Cris, I'm back!
No, never used "X-Mouse Button Control" in my life

Flags: needinfo?(gf.solone)

Hmm -- I'm wondering if there is perhaps more than one piece of software that can cause this issue; it may be that any piece of software that hijacks mouse wheel messages and attempts to re-post them to a target window will run into this problem.

Giovanni - I'm wondering if you can think of any other software that may have been on the machine that might intercept mouse wheel messages? IIRC you mentioned it was a corporate machine? Was there perhaps some kind of VNC software or maybe a software KVM switch? Perhaps one of those "mouse sharing" programs? Or maybe some software that would allow your IT department to take control of your machine?

Flags: needinfo?(gf.solone)

I'm a part of the IT dept. 😄
On our laptops we only use TeamViewer go manage remote assistance, nothing else, or at any rate nothing that I can honestly think of now. Consider that on the new laptop I continue to have a very similar configuration as on the previous laptop, but I no longer experience the problem.

Flags: needinfo?(gf.solone)

Set release status flags based on info from the regressing bug 1347710

Thanks for the info, everyone. I am now able to reproduce this issue after installing XMBC on my own machine, and I also see the same behavior that Davyd reported where checking Disable Scroll Window Under Cursor fixes the problem.

The fact that Gioxx saw this on his own machine without XMBC means that there may be multiple programs that cause this, so the general solution may not be as easy as "don't use XMBC". I will spend some time finding the root cause and see if we can find a better workaround, as I'm concerned this problem will only get bigger and broader once this feature is enabled in Firefox Release channel.

enabled in nightly only

Set release status flags based on info from the regressing bug 1347710

Alright -- I have a bunch more information about this bug, including a mostly-complete explanation of the root cause:

Root cause

  • We have a "compositor window" that runs in the GPU process that is a child window of the tab widget in the
    main UI process. It has the WS_DISABLED window style, so it should be ignored by Win32 for the purposes
    of message processing.

  • XMBC offers a feature that emulates the Windows 10 behavior of sending mouse wheel events to whatever window is
    currently under the mouse cursor, even if that window isn't the current focus window.

  • To accomplish this, XMBC installs low-level mouse hook, which swallows scroll messages instead of passing them
    through to Win32. It uses its own logic to figure out what the target window should be.

  • It incorrectly identifies the GPU process "compositor" window as the target of the scroll message and posts it
    to its message queue, even though the window is marked as disabled.

  • However, even though this is technically a bug, it actually works under normal circumstances because the
    DefWindowProc just bubbles the message up to the parent window of the process.

  • But once we enable the GPU Sandbox, we lower the integrity level of the compositor window.

  • When it tries to re-post the scroll message to its parent window, it can't because a low-integrity process
    can't post messages to a medium-integrity window.

Other stuff we know

  • Scrolling works if the (initial, delayed) integrity levels are (medium, low), but (low, low) is broken.

    • Bob Owen mentioned that he's seen this type of thing before. Apparently there are some User32 subsystem
      things that get initialized in early process startup at "medium" integrity, so after the drop they are still
      able to post messages to higher-integrity windows.
  • Without XMBC, Windows respects the WM_DISABLED flag and just posts all scroll messages directly to the
    parent window.

  • XMBC is not the only software that has this issue, since Gioxx has said that he doesn't use XMBC and still
    experienced it.

Potential Solutions

  • Use "initial=medium, delayed=low" for the integrity level.

    • The main issue is that this means the GPU process can spam input events at the main process, possibly other
      UI actions are allowed. Likely weakens the GPU sandbox a lot.
  • Re-post scroll wheel events to the main process using IPDL.

    • Might be easy, or might be absurdly difficult... Win32's behavior is often very complex and has a variety of
      weird edge cases when it comes to bubbling up input events and coalescing events together. I could imagine a
      long tail of weird behaviors requiring constant adjustments.
  • Simply detect that the wrong thing is happening and inform the user and/or support engineers somehow.

    • We should never see input messages being posted to the queue of the GPU process compositor window, so if we
      do see them, that tells us that some program is doing the wrong thing.

    • Maybe we add the fact that it occurred to about:support?

    • Perhaps we can do something like display a message window with a link to SUMO or something?

  • Maybe there is some way to ensure that the GPU compositor window is even less likely to be chosen by tools like
    XMBC

    • I'm going to contact the author of the software to ask how XMBC makes this decision

    • Perhaps there are other flags that can be set on a window to make it "super-disabled"

  • Investigate other ways to have GPU process render to UI window that don't involve this GPU-process-child to
    UI-process-parent thing?

Chrome also has a compositor window (or it did the last time I tangled with a win32 message issue involving the compositing window), can we learn anything from their implementation?

I'm trying to remember why we needed that window in the first place. Might be interesting to investigate that. I think it might have had something to do with rendering on older Windows versions, but could be wrong.

I'd also be interested in knowing how wide spread this is. Maybe some telemetry to detect this might be useful?

Lastly, sometimes just tweaking the window type or altering properties like disabled / hidden / window type might help. We could also reach out to one of the companies that do this and ask them. Jeff was saying Chrome has this window as well but they don't see the issue, so there might be clues in Chromium code as well.

I've looked at Chromium's source code, and it seems that we mostly do all the same things that they do. I checked with Spy++, and Chromium's GPU compositor window has the exact same Window Class Style, Window Style, and Window Extended Style that we do. AFAICT our window procedures also aren't any different; both of us simply call DefWindowProc() in the GPU compositor window for every message.

Also, I made a small utility that installs global Win32 message queue hooks and monitors where messages are ending up. I can see that this X Mouse Button Control program absorbs WM_MOUSESCROLL messages for both Firefox and Chromium, but then on Firefox it decides to re-post them to the GPU process compositor window, whereas on Chromium it posts the messages directly to the parent window in the UI process (Which, of course, is the behavior we want).

One of the differences I've noticed is that Chromium calls SetWindowPos(..HWND_BOTTOM..) here and we don't, but I tried adding it to our code and it didn't fix anything.

I also noticed that Chromium has a second child window called the "Chrome Legacy Window" that they create here, and it is a sibling of the GPU compositing window (but owned by the UI process). I thought perhaps this window was somehow intercepting the scroll wheel, but luckily Chromium provides a --disable-legacy-window command line switch to disable it, so I was able to test.

Unfortunately, this was a dead end -- Even without this "legacy window", Chromium still works properly.

Even though this "Chrome Legacy Window" thing I noticed above was a dead end, it actually did give me an idea of how we might solve this: Perhaps it would work to create another child window of the main process nsWindow that is also in the main process and would be a sibling of the GPU compositor window, but sits above it in the Z-order, and is composed of entirely "transparent black" (RGBA{0, 0, 0, 0}) pixels.

This window would therefore be entirely invisible, so the user would see the GPU process compositor window, but it would receive all input events and be able to pass it on to parent (see diagram below)

Of course... This doesn't answer the question about why Chrome is able to make this work without this window. Ultimately that question still needs to be answered, but doing this might actually be a good idea regardless of the outcome of my investigation.

Diagram of what the window hierarchy would look like with this idea:

(Z-order goes from top-to-bottom)

MozillaWindowClass (UI Process)
│
├-> NewWindowClass (UI Process)
└-> MozillaCompositorWindowClass (GPU Process)

I left a message in the XMBC forums, and the author of the program replied. This quote is particularly important:

I'm fairly certain that the reason Chrome behaves "OK" is because I have previously had to put in rules "workarounds" specifically for chrome and Edge which I never had to do for Firefox. XMBC looks at various things, mainly the window class, or the parent window class (etc) and perhaps the process name (I can't remember and its too late here to look right now) to determine if it is safe to redirect the scroll messages.

So it looks like XMBC has a specific workaround for Chromium that doesn't exist for Firefox. The author seems like they may fix it in a future release, but at least it's good-to-know that it's nothing we're doing.

Unfortunately, it's worth remembering that Gioxx wasn't using XMBC and still hit this, so it's likely we will run into this problem once we hit Firefox Release.

Going forward, I think we should add a new annotation to "about:support" if any input message is posted to the GPU compositor window. The window is disabled, so any input event being posted to it will always be an error, likely caused by a bug in some other program. This would help our engineers immediately recognize this issue when we hit Release channel.

It might also be worth investigating the solution I proposed in Comment 68, which could actually make us more robust against this type of stuff than even Chromium is. If the GPU Process compositor window always has an invisible Main Process window on top of it in the Z-order, even programs like XMBC that use hit testing to identify the target window will end up identifying the main UI process.

bug 1191971 comment 11 gives the justification for this window: "IDCompositionDevice::CreateTargetForHwnd() requests that window must belong to the calling process"

Attachment #9305380 - Attachment description: WIP: Bug 1798014 - Note mouse redirection bugs in user software in about:support → Bug 1798014 - Note mouse redirection bugs in user software in about:support
Pushed by cmartin@mozilla.com:
https://hg.mozilla.org/integration/autoland/rev/49e10969e5a3
Note mouse redirection bugs in user software in about:support r=jrmuizel
Status: ASSIGNED → RESOLVED
Closed: 2 months ago
Resolution: --- → FIXED
Target Milestone: --- → 109 Branch

is this something you will want to uplift to fx108?

Flags: needinfo?(cmartin)

The feature that this fixes is only enabled in Nightly thus far, so I guess that means that fx108 should probably be changed to "unaffected"?

Flags: needinfo?(cmartin) → needinfo?(dsmith)
Flags: needinfo?(dsmith)
Flags: qe-verify+
Duplicate of this bug: 1805618
See Also: → 1805916

I could not reproduce issue on Win10x64 using FF build 108.0a1(20221028212211).
Can you please confirm issue is fixed on latest Beta 109.0b(link - https://archive.mozilla.org/pub/firefox/candidates/109.0b3-candidates/build1/).
Thank you very much.

Flags: needinfo?(underpass_bugzilla)

(In reply to Monica Chiorean from comment #77)

I could not reproduce issue on Win10x64 using FF build 108.0a1(20221028212211).
Can you please confirm issue is fixed on latest Beta 109.0b(link - https://archive.mozilla.org/pub/firefox/candidates/109.0b3-candidates/build1/).
Thank you very much.

Hello, in the last 109b (and 110 Nightly) the problem is solved in the sense that when you use the software named X-Mouse Button Control you have to

  • either in the "Global settings" disable the option named "Make scroll wheel scroll window under cursor"

  • or, if you are using a custom Firefox application profile (like I am doing) flag the option named "Disable Scroll Window Under Cursor"

Duplicate of this bug: 1805916
See Also: 1805916

Mark issue as verified by reporter as mentioned on comment#78.

Status: RESOLVED → VERIFIED
Flags: needinfo?(underpass_bugzilla)
See Also: → 1810878
Duplicate of this bug: 1810878
See Also: → 1811722
Duplicate of this bug: 1811722
See Also: 1811722
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