1238589 - Odd dots in line numbers of ideone.com

Status: NEW

(Core :: Graphics, defect, P3)

Description

[Chris H-C :chutten]

Attachment: oddDots.png

Firefox 32-bit 43.0.4, Win10x64
Also happens on my Nightly 46.0a1 2016-01-11

On ideone.com, using the keyboard to switch between line numbers results in an odd pattern of dots appearing in the line number column (see screenshot).

The dot patterns disappear shortly after they appear, if left alone (I think the cursor blink clears the rect to the correct colour). If you keep the dot patterns visible by going up and down lackadaisically you might see that the patterns are the same when you come back to them for about the duration of a cursor blink, then change to a new pattern.

I apologize that there isn't more to go one. Such is the nature of graphics bugs, I suppose?

GRAPHICS segment of about:support

Adapter Description	Intel(R) HD Graphics 5500
Adapter Drivers	igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
Adapter RAM	Unknown
Asynchronous Pan/Zoom	none
Device ID	0x1616
Direct2D Enabled	true
DirectWrite Enabled	true (10.0.10586.0)
Driver Date	7-17-2015
Driver Version	10.18.15.4256
GPU #2 Active	false
GPU Accelerated Windows	1/1 Direct3D 11 (OMTC)
Subsys ID	222717aa
Supports Hardware H264 Decoding	Yes
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 5500 Direct3D11 vs_5_0 ps_5_0)
windowLayerManagerRemote	true
AzureCanvasBackend	direct2d 1.1
AzureContentBackend	direct2d 1.1
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0

Comment 1

[David Anderson [:dvander] - inactive, e-mail if emergency]

Does this occur if you disable Direct2D? (gfx.direct2d.disabled to true in about:config, then restart Firefox)

Comment 2

[Chris H-C :chutten]

Sadly, yes. Anything else I can try?

Comment 3

[David Anderson [:dvander] - inactive, e-mail if emergency]

(In reply to Chris H-C :chutten from comment #2)
> Sadly, yes. Anything else I can try?

What happens if you disable acceleration completely? (layers.acceleration.disabled = true in about:config)

Comment 4

[Chris H-C :chutten]

That nixed it. Guess we start blaming the compositor?

Comment 5

[:waddlesplash]

Attachment: (corrupt GIF, ignore)

Animated GIF depiction of the bug happening

Comment 6

[:waddlesplash]

I've got an Intel HD 5500 as well, but I see this bug in quite a lot of places, most notably on YouTube, and it's a lot worse when a video is playing (See attached .gif of the bug.)

about:support information:

Features
Compositing	Direct3D 11
Asynchronous Pan/Zoom	wheel input enabled
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 5500 Direct3D11 vs_5_0 ps_5_0)
Hardware H264 Decoding	Yes; D3D11 blacklisted with DLL igd10iumd32.dll (20.19.15.4331); Using D3D9 API
Direct2D	true
DirectWrite	true (10.0.10586.494)
GPU #1
Active	Yes
Description	Intel(R) HD Graphics 5500
Vendor ID	0x8086
Device ID	0x1616
Driver Version	20.19.15.4331
Driver Date	11-18-2015
Drivers	igdumdim64 igd10iumd64 igd10iumd64 igd12umd64 igdumdim32 igd10iumd32 igd10iumd32 igd12umd32
Subsys ID	20578086
RAM	Unknown
Diagnostics
AzureCanvasAccelerated	0
AzureCanvasBackend	direct2d 1.1
AzureContentBackend	direct2d 1.1
AzureFallbackCanvasBackend	cairo

Comment 7

[:waddlesplash]

Comment on attachment 8773286 [details]
(corrupt GIF, ignore)

GIF itself is corrupted, does not properly show bug.

Comment 8

[Ryan VanderMeulen [:RyanVM]]

Things got a lot better for me with newer Intel graphics drivers, FWIW. I'm actually kinda surprised you're on 4331 still as I thought Intel had pushed a newer version to Windows Update at this point. Anyway, you can try the newer ones direct from Intel:
https://downloadcenter.intel.com/download/26078/Intel-Graphics-Driver-for-Windows-10-and-Windows-7-8-1-15-40-?v=t

Comment 9

[:waddlesplash]

Attachment: Video_of_bug_on_YouTube.avi

AVI of bug happening

Comment 10

[:waddlesplash]

> Things got a lot better for me with newer Intel graphics drivers, FWIW. 

This is on my work machine, and I can't update the drivers. However, my machine at home has the same GPU and same bug, and I think it has newer drivers, but if it doesn't, I'll update and retest.

Comment 11

[Chris H-C :chutten]

Mine's 4444, latest is 4463.

Interestingly, when I try to update I get told it won't go and am pointed to the following website: http://www.intel.com/content/www/us/en/support/graphics-drivers/000005469.html

Apparently, since my laptop manufacturer (Lenovo) made changes to the driver, Intel won't allow me to install its driver as an upgrade. Probably a sensible idea at the time, but pretty baffling since Lenovo is unlikely to keep updating these drivers on my behalf.

So, updating the driver's a no-go for me, too.

Comment 12

[Ryan VanderMeulen [:RyanVM]]

FWIW, you can get around that Lenovo insanity by manually updating the drivers from Device Manager. Not that that's much of a solution for the world at large.

Comment 13

[Chris H-C :chutten]

Updated to 4501 (latest from Intel, using the "unpack the zip and find the Have Disk button" method) and it still happens :(