https://bugs.freedesktop.org/show_bug.cgi?id=29867
--- Comment #1 from Michal Suchanek hramrach@centrum.cz 2010-08-29 05:03:21 PDT --- Forgot the version:
ii libgl1-mesa-dri 7.9.0~git20100827+gallium+r300.fa2deb3d-0ubuntu0tormod A free implementation of the OpenGL API -- DRI modules
THe screenshot is with this package, working is r600c from 7.8.2 (this package does not have any). I recall seeing the issue on r600 but it's moving quite fast so I should retest to see if it's still an issue there.