Bug 22111

Created attachment 26463 [details]
XorgLog.gz

Forwarding this bug from a Ubuntu reporter:
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/383411

[Problem]
After the system has been up for a period of time, text in certain applications (firefox, gnome-screensaver) start showing corruption on particular letters. 

[Discussion]
This appears only after the system has been up for several hours.  As time progresses, more letters become corrupt, until almost all text becomes corrupted.  Restarting the application does not help, nor does vtswitching.  Rebooting system restores things, but the corruption comes back again after a while.

The issue did not occur on -intel 2.7.1, and downgrading to that version seems to make the problem go away.

Michael is seeing this on a Dell 1420 when running the ec2fde7c snapshot from June 2nd.  Bryce also has a 1420, and sees the same behavior, but is running the 8e942b70 git snapshot from May 26th.

[Original Report]
After updating my Karmic machine to the new UXA-by-default Intel driver, I'm seeing some odd text corruption in places. I'm attaching a screenshot.

In the screenshot, the text is supposed to say "Here's a patch to add info codes for the various upload worker thread events. Useful for showing a different status message in Deja Dup when we're uploading."

Reloading the page doesn't make it go away. I've seen it on other web pages too, where some sections of text, but not all are corrupted. I've also seen it on the gnome-screensaver 'lock screen' login window. So I don't think it's Firefox-only. Some pango thing?

[lspci]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c)
	Subsystem: Dell Device [1028:01f3]

ProblemType: Bug
Architecture: i386
Date: Wed Jun 3 19:34:15 2009
DistroRelease: Ubuntu 9.10
MachineType: Dell Inc. Inspiron 1420
Package: xserver-xorg-video-intel 2:2.7.99.1+git20090602.ec2fde7c-0ubuntu1
ProcCmdLine: root=UUID=03105272-3f8b-4e3f-aeb4-611d88c12206 ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.30-7.8-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4~5ubuntu20
 libgl1-mesa-glx 7.4.1-1ubuntu1
 libdrm2 2.4.11-0ubuntu1
 xserver-xorg-video-intel 2:2.7.99.1+git20090602.ec2fde7c-0ubuntu1
 xserver-xorg-video-ati 1:6.12.2-1ubuntu1
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.30-7-generic i686
dmi.bios.date: 05/23/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 0DT492
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd05/23/2007:svnDellInc.:pnInspiron1420:pvr:rvnDellInc.:rn0DT492:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1420
dmi.sys.vendor: Dell Inc.
fglrx: Not loaded
fglrx-loaded: Error: command ['grep', 'fglrx', '/var/log/kern.log', '/proc/modules'] failed with exit code 1:
system:
 distro: Ubuntu
 architecture: i686kernel: 2.6.30-7-generic