io ho usato questo how to
http://www.ubuntuforums.org/showthread.php?t=24557
e come vedi ha funzionato alla perfezione
[code:1]skaman@Ska-Box:~$ fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: RADEON 9600 Generic
OpenGL version string: 1.3.4769 (X4.3.0-8.8.25)
skaman@Ska-Box:~$ glxgears
8130 frames in 5.0 seconds = 1626.000 FPS
skaman@Ska-Box:~$ fgl_glxgears
1395 frames in 5.0 seconds = 279.000 FPS
1623 frames in 5.0 seconds = 324.600 FPS
1634 frames in 5.0 seconds = 326.800 FPS
1625 frames in 5.0 seconds = 325.000 FPS
1633 frames in 5.0 seconds = 326.600 FPS
skaman@Ska-Box:~$
[/code:1]