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ATI Cards under Linux

My Configuration

• IBM Thinkpad T41p
• ATI FireGL T2 (AFAIK the same or a similar core as Radeon 9600 or 9700)
• Debian GNU/Linux unstable (My tips should apply to sarge, too)
• XFree86 4.3.0
• Kernel 2.6.9

• Using the fglrx drivers

  Pretty easy, use Flavio Stanchina's Debian packages.

• OpenGL

  Should work out of the box, otherwise there could be AGP problems, or X just uses the wrong OpenGL libs.

• XVideo

  Should also work out of the box.

• Enabling the XRandR-Extension

  The extension works only if DGA is disabled. DGA is a part of extmod, so insert the following into your modules section of your XF86Config-4:

  SubSection "extmod"
 Option "omit xfree86-dga"
EndSubSection

  This forces the extmod module to load without DGA support. Also very important: Comment out the extmod module itself, otherwise it will be loaded again, this time with DGA support, thus disabling XRandR:

  # Load "extmod"

  Test XRandR with the xrandr command. If it gives you all configured resolutions to choose, it works.