https://bugs.freedesktop.org/show_bug.cgi?id=58959
--- Comment #1 from Alex Deucher agd5f@yahoo.com --- xf86-video-ati 7.0.0 enables 2D tiling by default and hence requires mesa 9.x. You either need mesa 9.x, or you have to disable 2D tiling: Option "ColorTiling2D" "False" in the device section of your xorg.conf