Bug 55881 - [uxa g33] Bad glyphs in firefox
Summary: [uxa g33] Bad glyphs in firefox
Status: RESOLVED DUPLICATE of bug 36326
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: Chris Wilson
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-10-11 17:33 UTC by Jiri Slaby
Modified: 2013-01-16 18:03 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments
bad glyph in firefox (2.65 KB, image/png)
2012-10-11 17:33 UTC, Jiri Slaby
no flags Details
Xorg.log (53.70 KB, text/plain)
2012-10-11 17:34 UTC, Jiri Slaby
no flags Details

Description Jiri Slaby 2012-10-11 17:33:45 UTC
Created attachment 68449 [details]
bad glyph in firefox

This is with 2.20.9. From distribution, so it is UXA.
Comment 1 Jiri Slaby 2012-10-11 17:34:14 UTC
Created attachment 68450 [details]
Xorg.log
Comment 2 Chris Wilson 2012-10-11 17:43:05 UTC
Hmm, that is not what I was expecting with 'bad glyphs on g33'. Can you please test with https://bugs.freedesktop.org/attachment.cgi?id=67912 ?
Comment 3 Chris Wilson 2012-10-18 11:05:15 UTC
Jiri, do you mind periodically retesting with new kernels and reporting if you see the glitch again? If I am right about it being the cpu-relocs as will gm45/ilk, the issue should disappear with 3.7.
Comment 4 Chris Wilson 2012-10-18 11:06:25 UTC
(On the other hand, it could just be that UXA scrambles glyphs on g33, as we have a large number of reports to that effect - except that this corruption looks different.)
Comment 5 Jiri Slaby 2012-10-18 17:06:09 UTC
(In reply to comment #4)
> (On the other hand, it could just be that UXA scrambles glyphs on g33, as we

I am back on sna for some time and the mangled glyphs are gone. This is UXA specific I'd say, I haven't seen after the switch.
Comment 6 Chris Wilson 2012-12-19 11:11:41 UTC
I've pushed a tree to remove some of the optimisations to see if they are the cause of the corruption:

http://cgit.freedesktop.org/~ickle/xf86-video-intel #glyph-cache-bug

Can you please try this branch to see if does the trick?

Rough guide to testing:

$ git clone git://people.freedesktop.org/~ickle/xf86-video-intel
$ cd xf86-video-intel
$ git checkout origin/glyph-cache-bug
$ ./autogen.sh --prefix=/usr
$ make
$ sudo make install
# restart X
Comment 7 Chris Wilson 2013-01-16 18:03:07 UTC

*** This bug has been marked as a duplicate of bug 36326 ***


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