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[dima-tr <755791@xxxxxxxxxxxxxxxxxx>]

This helped: 
- get mesa3d from ftp://ftp.freedesktop.org/pub/mesa/7.10.2/ . Build it following the instructions on http://mesa3d.org which is basically  ./configure && make
- sudo cp <mesa>/lib/r300_dri.so  /usr/lib/dri/
(and probably the same for radeon_dri.so )

Usual performance for my glxgears 250 fps is back, I had the same  and the CPU is down to 0 (yoohoo!), but at some moment during my experiments I had 286 fps (the CPU was still at ~0!). At the moment I have no idea how to reproduce this. The experiments have involved: 
1) building x86-ati-driver from the latest sources, 
2) building mesa with drmProto, 
3) fiddling around with Section "Device" at specially created /usr/share/X11/xorg.conf.d/20-device.conf, 
4) copying <mesa>/lib/* to /sr/local/lib/GL and setting in ~/.bashrc 
  export LIBGL_DRIVERS_PATH=/usr/local/lib/GL
  export LD_LIBRARY_PATH=/usr/local/lib/GL:$LD_LIBRARY_PATH

Then some parts were left from the rep versions, and some were
overwritten. What namely gave a 20% faster combination is a mystery.

I'm synced to the latest Ubuntu 11.04 repositories, xorg-edgers is NOT
installed.

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https://bugs.launchpad.net/bugs/755791

Title:
  [RS690M] No 3d acceleration in Radeon X1200 with new Gallium r300 / 3d
  drivers in 11.04

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