Yo el unico driver que se que funciona seguro es este:
$ glxgears -printfps
24895 frames in 5.0 seconds = 4978.894 FPS
17143 frames in 5.0 seconds = 3428.508 FPS
25864 frames in 5.0 seconds = 5172.784 FPS
25261 frames in 5.0 seconds = 5052.051 FPS
25374 frames in 5.0 seconds = 5074.320 FPS
24378 frames in 5.0 seconds = 4875.260 FPS
25709 frames in 5.0 seconds = 5141.598 FPS
22200 frames in 5.0 seconds = 4439.804 FPS
18588 frames in 5.0 seconds = 3717.480 FPS
28795 frames in 5.0 seconds = 5758.888 FPS
28039 frames in 5.0 seconds = 5607.679 FPS
28683 frames in 5.0 seconds = 5736.472 FPS
24613 frames in 7.2 seconds = 3439.997 FPS
17269 frames in 5.0 seconds = 3453.662 FPS
Gasta un poco de pasta y pasate a NVIDIA, es una empresa que esta cpmprometida con linux, con un driver cojonudo, yo tengo el NVIDIA-Linux-x86-1.0-9629-pkg1.run totalmente estable con beryl...