Bug 29075

Forwarding this bug from Ubuntu reporter Julian Edwards:
http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/490298

[Problem]
On i965, windows will fail to repaint properly in KDE, leaving corruption on screen.

[Original Description]
I am getting some screen corruption using Kubuntu Karmic on my Intel GMA965.  I am unsure if it's the intel driver, KDE or the way KDE uses the intel driver.  I will attach a screenshot showing an example.

This first happened in Jaunty, and has not really fixed itself with the newer intel driver, so I suspect the problem lies there.

Architecture: amd64
Date: Mon Nov 30 11:31:38 2009
DistroRelease: Ubuntu 9.10
MachineType: Dell Inc. Latitude D630
Package: xorg 1:7.4+3ubuntu7
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=UUID=49bb501f-9dcb-4ce4-908f-2888f2313e99 ro splash
ProcEnviron:
 LC_TIME=en_GB.utf8
 LANGUAGE=
 PATH=(custom, user)
 LANG=en_GB.utf8ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu7
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xorg
Uname: Linux 2.6.31-14-generic x86_64
XsessionErrors: (polkit-gnome-authentication-agent-1:2947): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
dmi.bios.date: 05/16/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A10
dmi.board.name: 0KU184
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA10:bd05/16/2008:svnDellInc.:pnLatitudeD630:pvr:rvnDellInc.:rn0KU184:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude D630
dmi.sys.vendor: Dell Inc.
system: architecture:       x86_64kernel:             2.6.31-14-generic

[lspci]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 0c)
    	Subsystem: Dell Device [1028:01f9]