I stumbled upon a message on the internet while searching for a resolution that said something like: "After debugging and looking at loaded drivers and such it seems that even if I use the 'ati' driver it tries to load some DRI components from the 'fglrx' driver. After uninstalling the xorg-video-fglrx driver this problem was gone."
I have tried the same, and it worked flawlessly for me. So I would advise anyone else to try this. (And you could also try the other way around: uninstall 'ati' and use 'fglrx' if that's preferred. Haven't tested this though.) It seems like those two drivers might conflict with each other. (At least they did for me.) -- Can't load r200_dri in libGL (ATI Radeon R250 Lf [FireGL 9000]) https://launchpad.net/bugs/48029 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs