[Bug 36424] X crashes in KDE4 with compositing enabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=36424

--- Comment #11 from Alex Schuster <wonko at wonkology.org> 2011-04-21 08:59:27 PDT ---
Okay guys, thanks for the comments. I removed all of the fglrx stuff, installed
radeon-ucode (thanks, Felix!) and built another kernel, setting
CONFIG_EXTRA_FIRMWARE="radeon/R600_rlc.bin" and
CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware". Desktop effects are all back! No
apparent errors in dmesg or Xorg log. X takes less CPU power than with the
fglrx driver. Cool!

The only problem now is that OpenGL still is slow sometimes. glxgears tells me
the framerate should be approximately my refresh rate, but I would expect 60
instead of around 40 FPS. When I enlarge the glxgears window, the frame rate
drops down to about 20 FPS. 

When I turn compositing off, I get 55 FPS, and around 30 in full size.

Quake3 is still slow though. Unplayable (15-20 FPS) with compositing on, and
without compositing, a little faster, but flickering.

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