Bug 25285 - Font rendering corrupt
Summary: Font rendering corrupt
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: 7.5 (2009.10)
Hardware: x86 (IA32) Linux (All)
: high major
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-11-25 14:26 UTC by Michael Pereira
Modified: 2011-10-04 01:32 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


Attachments
Screenshot of the problematic font rendering (191.71 KB, image/png)
2009-11-25 14:26 UTC, Michael Pereira
no flags Details

Description Michael Pereira 2009-11-25 14:26:12 UTC
Created attachment 31479 [details]
Screenshot of the problematic font rendering

After having upgraded the xorg and xf86 packages on my Arch Linux I started to notice severe problems with font rendering.

After starting X server everything looks normal but after a bit of interaction (browsing, typing, etc...) the font rendering starts degrading. The characters seem to have bits chipped away and this gets worse and worse down to a point where no text is recognizable anymore. It occurs in all text displayed on the screen. Some icons, like the back, forward, reload, etc.. on firefox are also affected.
(see attached screenshot)

I have tried Gnome, XFCE and KDE and all have displayed this problem.

I have realized that playing with the "Font rendering details" in Gnome, i.e., Smoothing, Hinting and Subpixel order seems to temporarily relieve the problem but this is temporary only for the distortions come back as the user keeps interacting. Noticeably, none of the combinations of settings I've tried, and I believe I have tried most of them, was able to solve this problem.

Downgrading to version 7.4 has solved the problem.

I have installed the drivers ATI and Vesa. My graphics card it: ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] (rev 02)
Comment 1 Jeremy Huddleston Sequoia 2011-10-03 19:58:32 UTC
Are you still experincing this?  What did you actually change to fix the 
problem when you downgraded to "7.4"?  The katamari release numbers don't 
actually mean much as they're just a collection of other packages.  If you can 
tell us exactly which package change fixed it for you (ie, radeon driver, 
xorg-server, etc) that would help.

Short of that, I'm assuming this is a radeon dri bug based on the screenshot.

Try installing a newer version of mesa.  If you still have issues, try using 
the mesa dri driver or swrast instead of radeon gallium.
Comment 2 Michael Pereira 2011-10-04 01:32:32 UTC
I am not sure anymore about how this problem got solved. As I remember, eventually I down graded an awful amount of packages, waited for a few months and then let them upgrade to newer versions and it worked. I am actually using Ubuntu since a few months now and haven't had that problem again ever since.


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