Closed Bug 1093863 Opened 10 years ago Closed 10 years ago

Black screen Firefox on 33.0.2

Categories

(Core :: Graphics: Layers, defect)

Product:
Core
Component:
Graphics: Layers
Platform:
x86
macOS
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED FIXED
Milestone:
mozilla36
Tracking Flags:
Tracking Status
firefox33 + verified
firefox34 + fixed
firefox35 + fixed
firefox36 + fixed

People

(Reporter: jrmuizel, Assigned: bjacob)

References

Details

(Whiteboard: Solution: update your drivers (or, not recommended: disable OMTC, see comments #6 or #7))

Attachments

(1 file)

Blacklist D3D on dual Intel/AMD not advertised as such in the registry - r=jrmuizel
1.54 KB, patch
bjacob
: review+
jrmuizel
: approval-mozilla-aurora+
jrmuizel
: approval-mozilla-beta+
jrmuizel
: approval-mozilla-release+
Details | Diff | Splinter Review 
This is to track information about the current black startup bugs.
Please add the make & model of the computer showing the issue along with a link to the crash report from about:crashes from running http://people.mozilla.org/~jmuizelaar/crash-firefox.exe

Also note whether the problem happened with 33.0.0 vs 33.0.2
Blocks: 1088034
Blocks: 1083071
Summary: Black firefox on 33.0.2 → Black screen Firefox on 33.0.2
Whiteboard: Solution: update your drivers (or, not recommended: disable OMTC, see comments #6 or #7)
33.0.2 crash report as requested by Jeff: https://crash-stats.mozilla.com/report/index/bp-d5c68c3d-1dc0-4bd5-b273-7b0e82141105

Intel/AMD dual graphics setup, Win 8.1 x64
Lenovo running Win 7 x86 with switchable graphics:
- Intel HD Graphics 4000 - driver v9.17.10.3114
- AMD Radeon HD 8570M - driver v12.100.14.0

Black window displays for both 33.0.0 and 33.0.2:
- Firefox 33.0 - https://crash-stats.mozilla.com/report/index/ed954f28-3913-4c79-823d-b22d02141105
- Firefox 33.0.2 - https://crash-stats.mozilla.com/report/index/6aaf9980-905e-49cc-ae77-68aa72141105

Running https://tbpl.mozilla.org/?tree=Try&rev=294561e67f20 debug build with "firefox.exe | more" gives just a couple of warnings related to some missing add-on but nothing else. Also note that I get NO black window with this build. Graphics info from this build:
Adapter Description	Intel(R) HD Graphics 4000
Adapter Drivers	igdumd32 igd10umd32 igd10umd32
Adapter RAM	Unknown
Device ID	0x0166
DirectWrite Enabled	false (6.2.9200.16492)
Driver Date	4-17-2013
Driver Version	9.17.10.3114
GPU #2 Active	false
GPU Accelerated Windows	1/1 Direct3D 9 (OMTC)
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	true
AzureCanvasBackend	skia
AzureContentBackend	cairo
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0
(In reply to Florin Mezei, QA (:FlorinMezei) from comment #2)
> Lenovo running Win 7 x86 with switchable graphics:
> - Intel HD Graphics 4000 - driver v9.17.10.3114
> - AMD Radeon HD 8570M - driver v12.100.14.0
> 
> Black window displays for both 33.0.0 and 33.0.2:
> - Firefox 33.0 -
> https://crash-stats.mozilla.com/report/index/ed954f28-3913-4c79-823d-
> b22d02141105
> - Firefox 33.0.2 -
> https://crash-stats.mozilla.com/report/index/6aaf9980-905e-49cc-ae77-
> 68aa72141105
> 
> Running https://tbpl.mozilla.org/?tree=Try&rev=294561e67f20 debug build with
> "firefox.exe | more" gives just a couple of warnings related to some missing
> add-on but nothing else. Also note that I get NO black window with this
> build. Graphics info from this build:
> Adapter Description	Intel(R) HD Graphics 4000
> Adapter Drivers	igdumd32 igd10umd32 igd10umd32
> Adapter RAM	Unknown
> Device ID	0x0166
> DirectWrite Enabled	false (6.2.9200.16492)
> Driver Date	4-17-2013
> Driver Version	9.17.10.3114
> GPU #2 Active	false
> GPU Accelerated Windows	1/1 Direct3D 9 (OMTC)
> Vendor ID	0x8086
> WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex
> vs_3_0 ps_3_0)
> windowLayerManagerRemote	true
> AzureCanvasBackend	skia
> AzureContentBackend	cairo
> AzureFallbackCanvasBackend	cairo
> AzureSkiaAccelerated	0

The newest Intel VGA driver for HD4000 is 10.18.10.3958 from 9/30/2014. Could you update to that version and try again with 33.0 & 33.0.2? If you still get black screen, can you try using AMD's Autodetect Tool from bug 1083071 comment 194?
(In reply to Florin Mezei, QA (:FlorinMezei) from comment #2)
> Lenovo running Win 7 x86 with switchable graphics:


What's the model number for this computer?
Flags: needinfo?(florin.mezei)
(In reply to Florin Mezei, QA (:FlorinMezei) from comment #2)
> Lenovo running Win 7 x86 with switchable graphics:
> - Intel HD Graphics 4000 - driver v9.17.10.3114
> - AMD Radeon HD 8570M - driver v12.100.14.0
> 
> Black window displays for both 33.0.0 and 33.0.2:
> - Firefox 33.0 -
> https://crash-stats.mozilla.com/report/index/ed954f28-3913-4c79-823d-
> b22d02141105
> - Firefox 33.0.2 -
> https://crash-stats.mozilla.com/report/index/6aaf9980-905e-49cc-ae77-
> 68aa72141105
> 
> Running https://tbpl.mozilla.org/?tree=Try&rev=294561e67f20 debug build with
> "firefox.exe | more" gives just a couple of warnings related to some missing
> add-on but nothing else. Also note that I get NO black window with this
> build. Graphics info from this build:
> Adapter Description	Intel(R) HD Graphics 4000
> Adapter Drivers	igdumd32 igd10umd32 igd10umd32
> Adapter RAM	Unknown
> Device ID	0x0166
> DirectWrite Enabled	false (6.2.9200.16492)
> Driver Date	4-17-2013
> Driver Version	9.17.10.3114
> GPU #2 Active	false
> GPU Accelerated Windows	1/1 Direct3D 9 (OMTC)
> Vendor ID	0x8086
> WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex
> vs_3_0 ps_3_0)
> windowLayerManagerRemote	true
> AzureCanvasBackend	skia
> AzureContentBackend	cairo
> AzureFallbackCanvasBackend	cairo
> AzureSkiaAccelerated	0

Sorry, here's a direct link: https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=24346&lang=eng&ProdId=3711
Comment on attachment 8517755 [details] [diff] [review]
Blacklist D3D on dual Intel/AMD not advertised as such in the registry - r=jrmuizel

I got approval for this from Lawrence in person.
Attachment #8517755 - Flags: approval-mozilla-release+
Attachment #8517755 - Flags: approval-mozilla-beta+
Attachment #8517755 - Flags: approval-mozilla-aurora+
Assignee: nobody → bjacob
(In reply to Wes Kocher (:KWierso) from comment #9)
> https://hg.mozilla.org/integration/mozilla-inbound/rev/fb1bee089925

I'll keep an eye on this and will inform Ryan when it is green enough to uplift.
Anyone who's experiencing this bug please give the following build a try. 
http://ftp.mozilla.org/pub/mozilla.org/firefox/tinderbox-builds/mozilla-release-win32-debug/1415235767/

It should black list this situation and firefox should work. We're still going to try to figure out what's going wrong so that we can fix this properly.
Also landed on GECKO330_2014101104_RELBRANCH for 33.0.3:
https://hg.mozilla.org/releases/mozilla-release/rev/983a710b51c4
(In reply to Jeff Muizelaar [:jrmuizel] from comment #13)
> Anyone who's experiencing this bug please give the following build a try. 
> http://ftp.mozilla.org/pub/mozilla.org/firefox/tinderbox-builds/mozilla-
> release-win32-debug/1415235767/
> 
> It should black list this situation and firefox should work. We're still
> going to try to figure out what's going wrong so that we can fix this
> properly.

Verified on Lenovo G500 i7 running Win 7 x86 with switchable graphics:
- Intel HD Graphics 4000 - driver v9.17.10.3114
- AMD Radeon HD 8570M - driver v12.100.14.0

Firefox 33.0.3 build 2 (BuildID=20141105223254) starts correctly and no longer shows the black window.
Graphics information from about:support:
Adapter Description	Intel(R) HD Graphics 4000
Adapter Drivers	igdumd32 igd10umd32 igd10umd32
Adapter RAM	Unknown
Device ID	0x0166
DirectWrite Enabled	false (6.2.9200.16492)
Driver Date	4-17-2013
Driver Version	9.17.10.3114
GPU #2 Active	false
GPU Accelerated Windows	0/1 Basic (OMTC)
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	true
AzureCanvasBackend	skia
AzureContentBackend	cairo
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0

The try build from http://ftp.mozilla.org/pub/mozilla.org/firefox/tinderbox-builds/mozilla-release-win32-debug/1415235767/ does not start at all. Here's what I get when trying to start it:
pldhash: for the aTable at address 0090EA04, the given aEntrySize of 112 definitely favors chaining over double hashing.
[4652] WARNING: XPCOM objects created/destroyed from static ctor/dtor: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpcom/base/nsTraceRefcnt.cpp, line 145
[4652] WARNING: XPCOM objects created/destroyed from static ctor/dtor: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpcom/base/nsTraceRefcnt.cpp, line 145
[4652] WARNING: XPCOM objects created/destroyed from static ctor/dtor: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpcom/base/nsTraceRefcnt.cpp, line 145
System JS : WARNING resource://gre/modules/Preferences.jsm:378 - mutating the [[Prototype]] of an object will cause your code to run very slowly; instead create the object with the correct initial [[Prototype]] value using Object.create
[4652] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80004005: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpcom/base/nsSystemInfo.cpp, line 65
[4652] WARNING: Last startup was detected as a crash.: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/toolkit/components/startup/nsAppStartup.cpp, line 887
1415276823512   addons.xpi      WARN    Ignoring missing add-on in C:\Users\Diana\AppData\Roaming\Mozilla\Firefox\Profiles\w7xi561s.default\extensions\faststartff@gmail.com
1415276823519   addons.xpi      WARN    Ignoring missing add-on in C:\Users\Diana\AppData\Roaming\Mozilla\Firefox\Profiles\w7xi561s.default\extensions\shortcutff@gmail.com
[4652] WARNING: This method is lossy. Use GetCanonicalPath !: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpcom/io/nsLocalFileWin.cpp, line 3444
++DOCSHELL 077A4400 == 1 [pid = 4652] [id = 1]
++DOMWINDOW == 1 (077A4800) [pid = 4652] [serial = 1] [outer = 00000000]
++DOMWINDOW == 2 (077A5000) [pid = 4652] [serial = 2] [outer = 077A4800]
pldhash: for the aTable at address 07280F50, the given aEntrySize of 72 definitely favors chaining over double hashing.
[4652] WARNING: getting z level of unregistered window: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpfe/appshell/src/nsWindowMediator.cpp, line 591
[4652] WARNING: getting z level of unregistered window: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpfe/appshell/src/nsWindowMediator.cpp, line 591
[4652] WARNING: getting z level of unregistered window: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpfe/appshell/src/nsWindowMediator.cpp, line 591
[4652] WARNING: getting z level of unregistered window: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/xpfe/appshell/src/nsWindowMediator.cpp, line 591
++DOCSHELL 081BF800 == 2 [pid = 4652] [id = 2]
++DOMWINDOW == 3 (081BFC00) [pid = 4652] [serial = 3] [outer = 00000000]
++DOMWINDOW == 4 (081C0400) [pid = 4652] [serial = 4] [outer = 081BFC00]
++DOMWINDOW == 5 (08212C00) [pid = 4652] [serial = 5] [outer = 077A4800]
++DOCSHELL 0C1B4400 == 3 [pid = 4652] [id = 3]
++DOMWINDOW == 6 (0C1B5000) [pid = 4652] [serial = 6] [outer = 00000000]
++DOCSHELL 0C1B5C00 == 4 [pid = 4652] [id = 4]
++DOMWINDOW == 7 (0BD81200) [pid = 4652] [serial = 7] [outer = 00000000]
[4652] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/content/base/src/nsFrameLoader.cpp, line 400
++DOCSHELL 0CE6E400 == 5 [pid = 4652] [id = 5]
++DOMWINDOW == 8 (0CBE4200) [pid = 4652] [serial = 8] [outer = 00000000]
[4652] WARNING: NS_ENSURE_SUCCESS(rv, rv) failed with result 0x80040111: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/content/base/src/nsFrameLoader.cpp, line 400
++DOMWINDOW == 9 (0CFB9600) [pid = 4652] [serial = 9] [outer = 0CBE4200]
[4652] WARNING: NS_ENSURE_TRUE(nsContentUtils::GetCurrentJSContext()) failed: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/docshell/base/nsDocShell.cpp, line 8752
[4652] WARNING: NS_ENSURE_TRUE(globalObject && globalObject->GetGlobalJSObject()) failed: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/content/html/document/src/nsHTMLContentSink.cpp, line 742
[4652] WARNING: Subdocument container has no frame: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/layout/base/nsDocumentViewer.cpp, line 2522
++DOMWINDOW == 10 (0CEA1800) [pid = 4652] [serial = 10] [outer = 0C1B5000]
[4652] WARNING: NS_ENSURE_TRUE(globalObject && globalObject->GetGlobalJSObject()) failed: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/content/html/document/src/nsHTMLContentSink.cpp, line 742
[4652] WARNING: Subdocument container has no frame: file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/layout/base/nsDocumentViewer.cpp, line 2522
++DOMWINDOW == 11 (0CFC0E00) [pid = 4652] [serial = 11] [outer = 0BD81200]
++DOMWINDOW == 12 (0D3C4000) [pid = 4652] [serial = 12] [outer = 0CBE4200]
[4652] ###!!! ASSERTION: Can't use Direct3D 11 because of a driver bug: 'Error', file c:/builds/moz2_slave/m-rel-w32-d-000000000000000000/build/widget/windows/nsWindow.cpp, line 6754
Flags: needinfo?(florin.mezei)
Great news, congratulations to the gfx team!
status-firefox33: fixed → verified
https://hg.mozilla.org/mozilla-central/rev/fb1bee089925
Status: NEW → RESOLVED
Closed: 10 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla36
(In reply to Jeff Muizelaar [:jrmuizel] from comment #7)
> Comment on attachment 8517755 [details] [diff] [review]
> Blacklist D3D on dual Intel/AMD not advertised as such in the registry -
> r=jrmuizel
> 
> I got approval for this from Lawrence in person.

My Firefox 33.03 just got D3D blacklisted, and I now see tearing which I didn't have with FX32.02 or earlier.

While I have dual GPU (Intel i7-4500u + integrated HD4400 and discrete AMD 8850m, win 8.1-64) Firefox was and is running on the Intel iGPU. FWIW, I never experienced the black window bug.

Was it the goal of this patch to disable D3D on such systems, even if Firefox was and is running on the Intel iGPU?

Can this be overridden using prefs?
Bug stil present with OMTC disabled

https://bugzilla.mozilla.org/show_bug.cgi?id=1090046#c13
(In reply to Atharvan from comment #19)
> Bug stil present with OMTC disabled
> 
> https://bugzilla.mozilla.org/show_bug.cgi?id=1090046#c13

What build is that Atharvan?
Flags: needinfo?(Atharvan)
(In reply to Avi Halachmi (:avih) from comment #18)
> While I have dual GPU (Intel i7-4500u + integrated HD4400 and discrete AMD
> 8850m, win 8.1-64) Firefox was and is running on the Intel iGPU. FWIW, I
> never experienced the black window bug.
> 
> Was it the goal of this patch to disable D3D on such systems, even if
> Firefox was and is running on the Intel iGPU?

It's a long-standing Firefox-bug, where HWA gets disabled even if only the unused GPU is blacklisted: bug 628129

> Can this be overridden using prefs?

gfx.direct2d.force-enabled;true
(In reply to Avi Halachmi (:avih) from comment #18)
> (In reply to Jeff Muizelaar [:jrmuizel] from comment #7)
> > Comment on attachment 8517755 [details] [diff] [review]
> > Blacklist D3D on dual Intel/AMD not advertised as such in the registry -
> > r=jrmuizel
> > 
> > I got approval for this from Lawrence in person.
> 
> My Firefox 33.03 just got D3D blacklisted, and I now see tearing which I
> didn't have with FX32.02 or earlier.
> 
> While I have dual GPU (Intel i7-4500u + integrated HD4400 and discrete AMD
> 8850m, win 8.1-64) Firefox was and is running on the Intel iGPU. FWIW, I
> never experienced the black window bug.
> 
> Was it the goal of this patch to disable D3D on such systems, even if
> Firefox was and is running on the Intel iGPU?
> 
> Can this be overridden using prefs?

Can you post the Graphics section from about:support?
(In reply to Atharvan from comment #19)
> Bug stil present with OMTC disabled
> 
> https://bugzilla.mozilla.org/show_bug.cgi?id=1090046#c13

Can you post the Graphics section from about:support?
Graphics
Adapter Description	Intel(R) HD Graphics
Adapter Drivers	igdumd32 igd10umd32 igd10umd32
Adapter RAM	Unknown
Device ID	0x0102
Direct2D Enabled	true
DirectWrite Enabled	true (6.2.9200.16571)
Driver Date	3-20-2014
Driver Version	9.17.10.3517
GPU #2 Active	false
GPU Accelerated Windows	1/1 Direct3D 10
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	false
AzureCanvasBackend	direct2d
AzureContentBackend	direct2d
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0
Flags: needinfo?(Atharvan)
(In reply to Atharvan from comment #24)
> Graphics
> Adapter Description	Intel(R) HD Graphics
> Adapter Drivers	igdumd32 igd10umd32 igd10umd32
> Adapter RAM	Unknown
> Device ID	0x0102
> Direct2D Enabled	true
> DirectWrite Enabled	true (6.2.9200.16571)
> Driver Date	3-20-2014
> Driver Version	9.17.10.3517
> GPU #2 Active	false
> GPU Accelerated Windows	1/1 Direct3D 10
> Vendor ID	0x8086
> WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D9Ex vs_3_0
> ps_3_0)
> windowLayerManagerRemote	false
> AzureCanvasBackend	direct2d
> AzureContentBackend	direct2d
> AzureFallbackCanvasBackend	cairo
> AzureSkiaAccelerated	0

Thanks for this info. Well your driver is as current as can be. With OMTC = true it's still black as well?
(In reply to Florin Mezei, QA (:FlorinMezei) from comment #20)
> (In reply to Atharvan from comment #19)
> > Bug stil present with OMTC disabled
> > 
> > https://bugzilla.mozilla.org/show_bug.cgi?id=1090046#c13
> 
> What build is that Atharvan?

On that time its firefox 33.0.2 and Graphics section

Graphics
Adapter Description	Intel(R) HD Graphics
Adapter Drivers	igdumd32 igd10umd32 igd10umd32
Adapter RAM	Unknown
Device ID	0x0102
Direct2D Enabled	true
DirectWrite Enabled	true (6.2.9200.16571)
Driver Date	3-20-2014
Driver Version	9.17.10.3517
GPU #2 Active	false
GPU Accelerated Windows	1/1 Direct3D 10
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	false
AzureCanvasBackend	direct2d
AzureContentBackend	direct2d
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0
(In reply to Elbart from comment #21)
> ...
> > Can this be overridden using prefs?
> 
> gfx.direct2d.force-enabled;true

I don't think this works. First, it appears to be disabling D3D/window-acceleration rather D2D, and second, the exception at the patch _seems_ hard-coded. But maybe the override happens outside of the patch which landed at this bug. Still, I tried it and it didn't revert the behavior to that of Firefox 33.02, and neither did setting layers.acceleration.force-enabled to true.


about:support graphics section with Nightly 2014-11-06 (before the patch at this bug reached nightly) - I didn't experience the black window bug and OMTC performs nicely:

Adapter Description	Intel(R) HD Graphics Family
Adapter Drivers	igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
Adapter RAM	Unknown
ClearType Parameters	D [ Gamma: 2200 Pixel Structure: B ClearType Level: 100 Enhanced Contrast: 100 ] D [ Gamma: 2200 Pixel Structure: B ClearType Level: 100 Enhanced Contrast: 100 ] D [ Gamma: 2200 Pixel Structure: B ClearType Level: 100 Enhanced Contrast: 50 ]
Device ID	0x0a16
Direct2D Enabled	true
DirectWrite Enabled	true (6.3.9600.17111)
Driver Date	5-17-2014
Driver Version	10.18.10.3621
GPU #2 Active	false
GPU Accelerated Windows	1/1 Direct3D 11 (OMTC)
Subsys ID	05eb1028
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics Family Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	true
AzureCanvasBackend	direct2d
AzureContentBackend	direct2d 1.1
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0


about:support at Firefox 33.03 (I didn't experience the black window bug with 33.02, and did enjoy the scrolling performance very much):

Adapter Description	Intel(R) HD Graphics Family
Adapter Drivers	igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
Adapter RAM	Unknown
ClearType Parameters	D [ Gamma: 2200 Pixel Structure: B ClearType Level: 100 Enhanced Contrast: 100 ] D [ Gamma: 2200 Pixel Structure: B ClearType Level: 100 Enhanced Contrast: 100 ] D [ Gamma: 2200 Pixel Structure: B ClearType Level: 100 Enhanced Contrast: 50 ]
Device ID	0x0a16
DirectWrite Enabled	false (6.3.9600.17111)
Driver Date	5-17-2014
Driver Version	10.18.10.3621
GPU #2 Active	false
GPU Accelerated Windows	0/1 Basic (OMTC)
Vendor ID	0x8086
WebGL Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics Family Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	true
AzureCanvasBackend	skia
AzureContentBackend	cairo
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0


The difference in behavior for me from 33.02 to 33.03:
- Visible tearing.
- Noticeable degradation of scroll performance (less smooth and less consistent intervals).
Also, for comment 27, the AMD driver is the official/reference AMD Mobility Catalyst 14.4 from AMD, and for Intel it's 10.18.10.3621 official driver from Intel.

Both the Intel driver and the AMD driver are not the latest because the laptop HW vendor (Dell) supplied drivers are about 18 months old and official/reference driver from the GPU manufacturer don't always work well.

So official AMD mobility 14.4 and official Intel 3621 for Haswell are the currently the latest combo which works well on my HW.
can we enable GPU accleration again? The UI looks ugly as hell in 34b7. I'm no back to 34b6 and everything is fine. I have NO crashes or other issues.

I use Intel HD driver 10.18.10.3958 which is the latest version from Intel and the AMD is 14.4, because AMD dropped the support of Windows 8 (Build 9200) after 14.4. And I never use the AMD chip of my laptop. The Intel HD is fast enough.
ok, I have a small black part when the addon "extended statusbar" (https://addons.mozilla.org/en-US/firefox/addon/extended-statusbar/) disappears: 

https://dl.dropboxusercontent.com/u/5749744/Bilder/Firefox/black_part_statusbar.png

Here are the info from 34b6:

Grafik
Direct2D aktiviert	true
DirectWrite aktiviert	true (6.2.9200.16581)
Geräte-ID	0x0166
GPU #2 aktiv	false
GPU-beschleunigte Fenster	1/1 Direct3D 11 (OMTC)
Karten-Beschreibung	Intel(R) HD Graphics 4000
Karten-RAM	Unknown
Karten-Treiber	igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
Subsys-ID	05721028
Treiber-Datum	9-30-2014
Treiber-Version	10.18.10.3958
Vendor-ID	0x8086
WebGL-Renderer	Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex vs_3_0 ps_3_0)
windowLayerManagerRemote	true
AzureCanvasBackend	direct2d
AzureContentBackend	direct2d
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0
Depends on: 1097321
Depends on: 1097162
Resolution: FIXED → DUPLICATE
So sorry, marked wrong bug.
Resolution: DUPLICATE → FIXED
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