https://help.ubuntu.com/ubuntu/desktopguide/C/hardware.html#video-acceleration-introduction
Video Acceleration
Check Status
Check if direct rendering has been enabled$ glxinfo | grep render
should say "Yes"
$ glxinfo | grep render direct rendering: Yes GLX_ATI_render_texture OpenGL renderer string: RADEON XPRESS 200M Series Generic
Run glxgears to see if they turn smoothly !
$ glxgears
if the "gears" don't seem to turning or turn jerkily then direct rendering maybe off !
ATI 3D X install
Assuming you have a X300 compliant Video Card ("ATI Technologies, Inc. Radeon Xpress 200M (RC410)" ?) then install the# aptitude install xorg-driver-fglrx
package and reconfigure xorg
$ sudo dpkg-reconfigure xserver-xorg
- say YES to most questions
- instead of auto-detected "ati" you need to force "fglrx"
- make sure you say YES to the framebuffer question
- make sure you choose 24 bits per pixel
ATI 3D X verify
$ fgl_glxgears
