3 years ago
3 years ago


(Reporter: ezh, Unassigned)


50 Branch
Windows 10

Firefox Tracking Flags

(Not tracked)



(1 attachment)



3 years ago
After some time of usage Aurora 50 UI becomes slow. Keyboard (writing and elements changing) and mouse input (elements changing) is happening with about 1 sec delay.

Then, after some tabs are close it becomes not so noticeable. After some time it will again show up.


3 years ago
Component: General → Untriaged
Hi Eugene, 

Thanks for reporting the bug. I have some questions to ask.

Can you visit about:support can paste your details?
Do you get the same behavior on Aurora when running safe mode?
Flags: needinfo?(ezh)

Comment 2

3 years ago
Application Basics

Name: Firefox
Version: 50.0a2
Build ID: 20160815004002
Update Channel: aurora
User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0
OS: Windows_NT 10.0
Multiprocess Windows: 4/4 (Enabled by user)
Safe Mode: false

Crash Reports for the Last 3 Days

All Crash Reports


Name: Ace Stream Web Extension
Version: 1.0.0
Enabled: true

Name: Ctrl-Tab
Enabled: true

Name: Firefox Hello Beta
Version: 1.4.4
Enabled: true

Name: FlyWeb
Version: 1.0.0
Enabled: true

Name: I don't care about cookies
Version: 2.5.8
Enabled: true
ID: jid1-KKzOGWgsW3Ao4Q@jetpack

Name: Kaspersky Protection
Version: 5.0.130-0-20160620125320
Enabled: true

Name: Multi-process staged rollout
Version: 1.0
Enabled: true

Name: Places Maintenance
Version: 2.0.1
Enabled: true

Name: Pocket
Version: 1.0.4
Enabled: true

Name: Select like a Boss
Version: 2015.
Enabled: true
ID: SelectLikeABoss@dzianis.rusak

Name: Web Compat
Version: 1.0
Enabled: true

Name: Ace Stream Web Extension
Version: 1.0.2
Enabled: false

Name: Awesome Screenshot - Capture, Annotate & More
Version: 3.0.11
Enabled: false
ID: jid0-GXjLLfbCoAx0LcltEdFrEkQdQPI@jetpack

Name: Estonian ID Card authentication module
Enabled: false
ID: {aa84ce40-4253-a00a-8cd6-0800200f9a67}

Name: Logitech SetPoint
Version: 6.5
Enabled: false
ID: {F003DA68-8256-4b37-A6C4-350FA04494DF}

Name: ScrapBook
Enabled: false
ID: {53A03D43-5363-4669-8190-99061B2DEBA5}

Name: VLCWatcha
Version: 0.772.1-signed.1-signed.1-let-fixed.1-signed
Enabled: false
ID: xxxxx@xxxxx.xxxx


Compositing: Direct3D 11
Asynchronous Pan/Zoom: wheel input enabled
WebGL Renderer: Google Inc. -- ANGLE (AMD Radeon HD 7800 Series Direct3D11 vs_5_0 ps_5_0)
WebGL2 Renderer: ATI Technologies Inc. -- AMD Radeon HD 7800 Series
Hardware H264 Decoding: Yes; Using D3D11 API
Audio Backend: wasapi
Direct2D: true
DirectWrite: true (10.0.14393.0)
GPU #1
Active: Yes
Description: AMD Radeon HD 7800 Series
Vendor ID: 0x1002
Device ID: 0x6819
Driver Version:
Driver Date: 7-21-2016
Drivers: aticfx64 aticfx64 aticfx64 amdxc64 aticfx32 aticfx32 aticfx32 amdxc32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
Subsys ID: 043a1043
RAM: 2048

AzureCanvasAccelerated: 0
AzureCanvasBackend: direct2d 1.1
AzureContentBackend: direct2d 1.1
AzureFallbackCanvasBackend: cairo
failures: CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable

Failure Log
(#0): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37213): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37214): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37215): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37216): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37217): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37218): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37219): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37220): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37221): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37222): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37223): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37224): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37225): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37226): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable
(#37227): CP+[GFX1-]: PersistentBufferProviderShared: front buffer unavailable

Important Modified Preferences

accessibility.typeaheadfind: true
accessibility.typeaheadfind.flashBar: 0
browser.cache.disk.capacity: 358400
browser.cache.disk.filesystem_reported: 1
browser.cache.disk.hashstats_reported: 1
browser.cache.disk.smart_size.first_run: false
browser.cache.disk.smart_size.use_old_max: false
browser.cache.frecency_experiment: 4 true true
browser.places.smartBookmarksVersion: 8
browser.sessionstore.upgradeBackup.latestBuildID: 20160815004002
browser.startup.homepage: about:home
browser.startup.homepage_override.buildID: 20160815004002
browser.startup.homepage_override.mstone: 50.0a2
browser.tabs.remote.autostart: true
browser.tabs.remote.autostart.2: false
browser.tabs.warnOnOpen: false
browser.urlbar.default.behavior: 0
browser.urlbar.userMadeSearchSuggestionsChoice: true
dom.apps.lastUpdate.buildID: 20160801004002
dom.apps.lastUpdate.mstone: 49.0a2
dom.apps.reset-permissions: true
dom.ipc.processCount: 4
dom.mozApps.used: true
dom.push.userAgentID: b32d2edea3864ebab304f0414d02dc0a
extensions.lastAppVersion: 50.0a2
font.internaluseonly.changed: true
gfx.crash-guard.d3d11layers.appVersion: 50.0a2
gfx.crash-guard.d3d11layers.deviceID: 0x6819
gfx.crash-guard.d3d11layers.feature-d2d: true
gfx.crash-guard.d3d11layers.feature-d3d11: true
gfx.crash-guard.status.: 2
gfx.crash-guard.status.d3d11layers: 2
gfx.crash-guard.status.d3d11video: 2
gfx.crash-guard.status.d3d9video: 2
media.benchmark.vp9.fps: 192
media.benchmark.vp9.versioncheck: 1
media.gmp-eme-adobe.abi: x86-msvc-x64
media.gmp-eme-adobe.lastUpdate: 1462003579
media.gmp-eme-adobe.version: 17
media.gmp-gmpopenh264.abi: x86-msvc-x64
media.gmp-gmpopenh264.lastUpdate: 1470941383
media.gmp-gmpopenh264.version: 1.6
media.gmp-manager.buildID: 20160815004002
media.gmp-manager.lastCheck: 1471290357
media.gmp-widevinecdm.abi: x86-msvc-x64
media.gmp-widevinecdm.lastUpdate: 1470910781
media.gmp-widevinecdm.version: 1
media.hardware-video-decoding.failed: false
media.webrtc.debug.log_file: C:\Users\me\AppData\Local\Temp\WebRTC.log
network.cookie.prefsMigrated: true
network.predictor.cleaned-up: true
places.database.lastMaintenance: 1471006027
places.history.expiration.transient_current_max_pages: 123848
plugin.disable_full_page_plugin_for_types: application/pdf
plugin.importedState: true
print.printer_HP_LaserJet_M1005.print_bgcolor: false
print.printer_HP_LaserJet_M1005.print_bgimages: false
print.printer_HP_LaserJet_M1005.print_duplex: -437918235
print.printer_HP_LaserJet_M1005.print_edge_bottom: 0
print.printer_HP_LaserJet_M1005.print_edge_left: 0
print.printer_HP_LaserJet_M1005.print_edge_right: 0
print.printer_HP_LaserJet_M1005.print_edge_top: 0
print.printer_HP_LaserJet_M1005.print_evenpages: true
print.printer_HP_LaserJet_M1005.print_footerleft: &PT
print.printer_HP_LaserJet_M1005.print_footerright: &D
print.printer_HP_LaserJet_M1005.print_headerleft: &T
print.printer_HP_LaserJet_M1005.print_headerright: &U
print.printer_HP_LaserJet_M1005.print_in_color: true
print.printer_HP_LaserJet_M1005.print_margin_bottom: 0.5
print.printer_HP_LaserJet_M1005.print_margin_left: 0.5
print.printer_HP_LaserJet_M1005.print_margin_right: 0.5
print.printer_HP_LaserJet_M1005.print_margin_top: 0.5
print.printer_HP_LaserJet_M1005.print_oddpages: true
print.printer_HP_LaserJet_M1005.print_orientation: 0
print.printer_HP_LaserJet_M1005.print_page_delay: 50
print.printer_HP_LaserJet_M1005.print_paper_data: 1
print.printer_HP_LaserJet_M1005.print_paper_height: 10,98
print.printer_HP_LaserJet_M1005.print_paper_size_unit: 0
print.printer_HP_LaserJet_M1005.print_paper_width: 8,46
print.printer_HP_LaserJet_M1005.print_resolution: 600
print.printer_HP_LaserJet_M1005.print_reversed: false
print.printer_HP_LaserJet_M1005.print_scaling: 1,00
print.printer_HP_LaserJet_M1005.print_shrink_to_fit: true
print.printer_HP_LaserJet_M1005.print_to_file: false
print.printer_HP_LaserJet_M1005.print_unwriteable_margin_bottom: 0
print.printer_HP_LaserJet_M1005.print_unwriteable_margin_left: 0
print.printer_HP_LaserJet_M1005.print_unwriteable_margin_right: 0
print.printer_HP_LaserJet_M1005.print_unwriteable_margin_top: 0
privacy.clearOnShutdown.passwords: false
privacy.donottrackheader.value: 1
security.OCSP.enabled: 0
security.sandbox.content.tempDirSuffix: {0f676cac-bdb0-4165-aa38-2bf3e941faf1}
security.tls.version.min: 0
services.sync.engine.awe: true
services.sync.engine.prefs.modified: false
services.sync.lastPing: 1471253225
services.sync.lastSync: Tue Aug 16 2016 01:03:08 GMT+0300 (FLE Standard Time)
services.sync.numClients: 10
storage.vacuum.last.index: 1
storage.vacuum.last.places.sqlite: 1470919626
ui.osk.debug.keyboardDisplayReason: IKPOS: Touch screen not found.

Important Locked Preferences

Places Database


Incremental GC: true


Activated: false
Prevent Accessibility: 0

Library Versions

Expected minimum version: 4.12
Version in use: 4.12

Expected minimum version: 3.26
Version in use: 3.26

Expected minimum version: 3.26
Version in use: 3.26

Expected minimum version: 3.26
Version in use: 3.26

Expected minimum version: 3.26
Version in use: 3.26

Experimental Features
Flags: needinfo?(ezh)

Comment 3

3 years ago
1. It is happening only on 1 from 3 my computers. (Intel i5 + AMD 7850 video)

2. It feels like it starts after opening some tabs. They do not have video, just tabs with some HTML.

3. I did not tried in safe mode yet.

Comment 4

3 years ago
It seems in safe mode it is OK. I will try to disable all addons.

Comment 5

3 years ago
Update. I do see slowdown in safe mode as well...

Comment 6

3 years ago
Aurora was slow.
I left the computer for XX min.
It was fast.
But after 30-60 sec of usage it began to slow down.
Is this similar to bug 1295214?
Flags: needinfo?(ezh)

Comment 8

3 years ago
Seems similar, but in my case it comes for long period of times. 
I also noticed that closing tabs can make it OK again.

Now I'm back to Aurora 49, otherwise I cannot work...
Flags: needinfo?(ezh)

Comment 9

3 years ago
I am seeing this on a system with an AMD GPU (Intel i5-4670, AMD HD7790 + latest drivers, Win 10 x64 Anniversary Edition, x64 nightly and developer builds, refreshed profile, zero to three addons, no plugins).

Closing all non-blank tabs alleviates it, youtube and big imgur pages possibly trigger it.

Comment 10

3 years ago
About:Support info added as an attachment.

Comment 11

3 years ago
Created attachment 8783242 [details]

Comment 12

3 years ago
Maybe we should together find the first affected build on 50.0 Nightly branch.
Here is also mine ticket. Bug 1294953 which seem to be the same this. One thing I'm sure that it is v50 regression. But I haven't tried bisecting nightly version yet. It is so annoying to wait every time until this bug triggers to see if given build is affected. I might try next weekend when I have more time if no one beat me to it.
Thanks, I replied in my report. Seems to be indeed vsync issue. See my reply in Bug 1294953
This bug is probably a duplicate of bug # 1295214.
Please retest to see if it's fixed in latest Nightly (51.0a1 [2016-08-27]),
if not, reopen this bug.
Last Resolved: 3 years ago
Resolution: --- → DUPLICATE
Duplicate of bug: 1295214
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