So my testcase was "fixed" by:
commit 1565917f10d9fb3c7e2e7e273173c38c364b9861
Author: Chris Wilson <[email protected]>
Date: Tue Feb 5 10:11:14 2013 +0000
sna/gen4: Disable non-rectilinear GPU span compositing
This seems to be the primary victim of the render corruption, so disable
until the root cause is fixed.
Can you please check your worst-case / typical behaviours and see if any
still remain?
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https://bugs.launchpad.net/bugs/1098334
Title:
Font corruption in Chromium tab bar using Intel SNA
Status in X.org xf86-video-intel:
Confirmed
Status in “xserver-xorg-video-intel” package in Ubuntu:
Fix Released
Bug description:
After enabling the SNA acceleration method and rebooting, I noticed
that graphical glitches appeared in the letters on Chromium's tab bar
during the mouse hover animation. I've attached a screenshot
illustrating this, particularly with the letter "g" in the screenshot.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.7.0-7.15-generic 3.7.0
Uname: Linux 3.7.0-7-generic x86_64
ApportVersion: 2.8-0ubuntu1
Architecture: amd64
Date: Thu Jan 10 16:00:55 2013
InstallationDate: Installed on 2012-09-24 (107 days ago)
InstallationMedia: Kubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64
(20120822.2)
MarkForUpload: True
SourcePackage: xorg
UpgradeStatus: Upgraded to raring on 2012-09-25 (107 days ago)
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