1153794 - Blank windows & dialogs on OS X 10.7.5 since bug 1125848

Status: RESOLVED FIXED

(Core :: Graphics: Layers, defect)

Description

[Nick Thomas [:nthomas] (UTC+12)]

Attachment: Blank window with blank about: dialog

I updated Nightly from a mid-March build and noticed no UI or content was drawn inside any window or dialog box, see the screenshot. Narrowed down the regression to
 http://hg.mozilla.org/mozilla-central/rev/295db120bf12
using mozgression, so bug 1125848.

Beta 38.0b3 is OK, so is Aurora (rev ed573da17975, 2015-04-13), even though that bug landed there too.

No problems on Yosemite, and presumably on 10.6 if we're passing reftest on Treeherder. The bug occurs on old laptop, a MacbookPro2,2 with ATI Radeon X1600 graphics, running 10.7.5.

[Tracking Requested - why for this release]:
We still support 10.7, and Firefox is unusable.

Comment 1

[Stefan [:stefanh]]

if you see this in a separate profile it might be bug 1151644 (or bug 1151492  which is the same).

Comment 2

[Nick Thomas [:nthomas] (UTC+12)]

It looks like it might be. about:support has this to say about the Graphics setup:

Device ID	0x71c5
GPU Accelerated Windows	0/1 Basic Blocked for your graphics card because of unresolved driver issues.
Vendor ID	0x1002
WebGL Renderer	ATI Technologies Inc. -- ATI Radeon X1600 OpenGL Engine
windowLayerManagerRemote	false
AzureCanvasBackend	quartz
AzureContentBackend	quartz
AzureFallbackCanvasBackend	none
AzureSkiaAccelerated	0

So bad driver is blacklisted and acceleration is disabled, which is another way of getting to the same place ?  If 10.7 seems not to be relevant, had thought it might be because we don't run tests there.

Comment 3

[Nick Thomas [:nthomas] (UTC+12)]

That's from Firefox 37.0.1, since it's not possible to get it from Nightly. 

layers.acceleration.disabled is already false and doesn't make any difference if flipped to true.

Comment 4

[Liz Henry (:lizzard) (relman/hg->git project)]

nical, do you think this regression is from bug 1125848?

Comment 5

[Nick Thomas [:nthomas] (UTC+12)]

I updated to an Nightly with the fix from bug 1151644 and the app is rendered properly again.