Comment 9 for bug 330476

atunnel screensaver shows rendering glitches (some textures are momentarily rendered black, see attached screenshots). Repros consistently on intrepid and on jaunty live CD as of feb 3rd using a 965 machine with pci id 8086:2a02.

Eric Anholt et al are discussing this particular bug in this thread:
http://lists.freedesktop.org/archives/intel-gfx/2009-February/001351.html

Once Intel commits something upstream we should get this into jaunty (and possibly intrepid?).

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Google Earth is know to also be affected, but probably a wide range of 3D apps see this from time to time.

These bugs might be the same issue but since Eric says it's probably chipset specific for 965 it might also be that at least the 945 issues/screenshots mentioned below are separate issues:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/262758
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/289106

Relevant upstream bugs include:
https://bugs.freedesktop.org/show_bug.cgi?id=19879
https://bugs.freedesktop.org/show_bug.cgi?id=19549