787770 - Corrupt text on random pages

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[Mike]

Attachment: Screenshot of affected page.

Sections of text appear garbled/corrupted (see attached screenshot). If I scroll up the page and down again, the text appears correctly.

Running Linux Mint 13 Xfce on Intel G31/33 GFX.

Also experienced the same issue on Firefox 14.0.1

Comment 1

[Loic]

Could you provide some URLs with this issue, please.

Comment 2

[Mats Palmgren (inactive)]

Please copy-paste the Graphics section of about:support here.

Does the problem go away if you disable hardware acceleration?
(under Preferences->Advanced.  I think you need to restart Firefox for it
to take effect)

Comment 3

[Mike]

Hi guys,

Sorry for the late response...

@Loic,

It can happen on any page (seemingly at random) - although it has happened at the same spot on my eBay page on a couple of specific pieces of text. However, if I highlight the text (via mouse-over on affected hyper-links, or click-dragging on decorative text) the corruption disappears.

@Mats Palmgren,

Here's the section from about:support you requested:

Graphics
--------
Adapter Description: Tungsten Graphics, Inc -- Mesa DRI Intel(R) G33 x86/MMX/SSE2
Vendor ID: Tungsten Graphics, Inc
Device ID: Mesa DRI Intel(R) G33 x86/MMX/SSE2
Driver Version: 1.4 Mesa 8.0.2
WebGL Renderer: Blocked for your graphics card because of unresolved driver issues.
GPU Accelerated Windows: 0. Blocked for your graphics card because of unresolved driver issues.
AzureBackend: skia

... so it looks like a GFX driver issue? Is that Linux-related, or a Firefox-specific driver?

I also tried turning hardware acceleration off in preferences and it made no difference, but I'm guessing that the GFX driver issues would mean hardware acceleration is not used anyway?

Please let me know if you have any further questions.

Cheers,

Mike.

Comment 4

[Mike]

(In reply to Mats Palmgren [:mats] from comment #2)
> Please copy-paste the Graphics section of about:support here.
> 
> Does the problem go away if you disable hardware acceleration?
> (under Preferences->Advanced.  I think you need to restart Firefox for it
> to take effect)

Hi guys,

Sorry for the late response...

@Loic,

It can happen on any page (seemingly at random) - although it has happened at the same spot on my eBay page on a couple of specific pieces of text. However, if I highlight the text (via mouse-over on affected hyper-links, or click-dragging on decorative text) the corruption disappears.

@Mats Palmgren,

Here's the section from about:support you requested:

Graphics
--------
Adapter Description: Tungsten Graphics, Inc -- Mesa DRI Intel(R) G33 x86/MMX/SSE2
Vendor ID: Tungsten Graphics, Inc
Device ID: Mesa DRI Intel(R) G33 x86/MMX/SSE2
Driver Version: 1.4 Mesa 8.0.2
WebGL Renderer: Blocked for your graphics card because of unresolved driver issues.
GPU Accelerated Windows: 0. Blocked for your graphics card because of unresolved driver issues.
AzureBackend: skia

... so it looks like a GFX driver issue? Is that Linux-related, or a Firefox-specific driver?

I also tried turning hardware acceleration off in preferences and it made no difference, but I'm guessing that the GFX driver issues would mean hardware acceleration is not used anyway?

Please let me know if you have any further questions.

Cheers,

Mike.

Comment 5

[Gregory Pappas [:gregp]]

Unable to reproduce in current versions.