enabling 3d (drm) on an ati 3D Rage Pro AGP (8M memory)

to enable the kernel driver you need to follow this advice (driver is missing in debian and ubuntu )

mach64 driver for xorg is already packaged for newer distributions (> hardy or debian unstable)

also in my case i had to do an
$sudo depmod -a
and added mach64 in
/etc/modules

after that i can see that direct rendering is enabled
$ glxinfo | grep direct
direct rendering: Yes
and with glgears i get 140FPS
and now i can play openredalert on this old pc