Note: This is a public test instance of Red Hat Bugzilla. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback at bugzilla.redhat.com.
Bug 495908 - glyph corruption
Summary: glyph corruption
Keywords:
Status: CLOSED DUPLICATE of bug 495323
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-intel
Version: rawhide
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Kristian Høgsberg
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks: F11XorgBlocker
TreeView+ depends on / blocked
 
Reported: 2009-04-15 14:29 UTC by Matthias Clasen
Modified: 2018-04-11 10:31 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-04-28 14:14:53 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)
screenshot (deleted)
2009-04-15 14:29 UTC, Matthias Clasen 		no flags Details
Xorg.0.log (deleted)
2009-04-15 15:46 UTC, Matthias Clasen 		no flags Details
View All

Description Matthias Clasen 2009-04-15 14:29:08 UTC 
Created attachment 339691 [details]
screenshot

Lately, I am seeing glyphs turn to garbage on my screen. It seems affect individual glyphs, but it is progressive and gets worse over time. The attached screenshot shows many corrupted glyphs in firefox, and a few in xchat.
Comment 1 Dan Williams 2009-04-15 14:41:05 UTC 
I see this a lot on an i830 (for the past two months or more); starts pretty soon after login.  Killing the X server (ie, logout and log back in) brings glyphs back to normal for a few minutes before the corruption starts again.

It usually gets worse doing a lot of stuff with gnome-terminal.  It usually only affects one size of one font; ie 9pt will be corrupted, but the same font at 12pt will be fine (until it eventually gets corrupted too).

Matthias, I assume you've got GMA4500 or something?
Comment 2 Matthias Clasen 2009-04-15 15:46:06 UTC 
Created attachment 339699 [details]
Xorg.0.log
Comment 3 Adam Williamson 2009-04-16 21:34:04 UTC 
Looks similar to https://bugzilla.redhat.com/show_bug.cgi?id=495323 . Are you guys running Compiz, or KDE with desktop effects, or anything at all 3D-accelerated, as described in that report? Thanks.

-- 
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers
Comment 4 Matthias Clasen 2009-04-16 22:00:01 UTC 
Looks visually similar, indeed.
However, the corruption has not reappeared on my machine so far, since reporting this bug.
Comment 5 Matthias Clasen 2009-04-20 05:32:37 UTC 
Haven't seen this again, so I'll assume for now that whatever caused it has resolved itself.
Comment 6 Warren Togami 2009-04-20 21:02:24 UTC 
I am seeing this all of a sudden today.
Comment 7 Adam Williamson 2009-04-20 21:21:00 UTC 
again, see my question in comment #3.

-- 
Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers
Comment 8 Warren Togami 2009-04-20 21:50:10 UTC 
No compiz, no 3D accelerated.
Comment 9 paolo borelli 2009-04-23 12:55:54 UTC 
I see this very often, I just need to keep the pc (firefox?) running long enough
Comment 10 Matěj Cepl 2009-04-24 08:12:08 UTC 
(In reply to comment #9)
> I see this very often, I just need to keep the pc (firefox?) running long
> enough  

It seems to me that it could somehow relate to upgrade of your computer (and something between different versions of driver/kernel in memory and on disk). I know it sucks, but reboot makes font nice again, right?
Comment 11 paolo borelli 2009-04-24 08:18:34 UTC 
yes, rebooting makes the font nice again. Killing firefox and restarting it doesn't.
Comment 12 James 2009-04-28 08:05:32 UTC 
Is this not the same as Bug 495323?
Comment 13 Dan Williams 2009-04-28 14:14:53 UTC 

*** This bug has been marked as a duplicate of bug 495323 ***
Note You need to log in before you can comment on or make changes to this bug.