Bug#556159: suggestion
I'm not very knowledgeable, but I've had my share of problems with ATI Xpress 200m rc410. My card is actually detected as: ATI Radeon xpress 200m PCIE 5955 by lspci
In my case a fresh installed of Squeeze a few months back had none of the problems you're having, but I did get this error in xorg0.log you are getting:
(EE) RADEON(0): [dri] RADEONDRIGetVersion failed to open the DRM
[dri] Disabling DRI.
This is easily solved now, by installing firmware-linux-nonfree, firmware-linux and libdrm-radeon1. DRI should work now and you won't need to disable it in the xorg.conf file. I doubt this is your only issue, but try it. In my case, this provides 2d and 3d accel fine, but I still get a blank screen upon waking up from suspend and hangs before going into hibernation.
Some xpress-200m-people have been able to solve "all" their radeon problems by using newer kernel from sid or experimental + Kernel modesetting:
try getting the newer radeon driver from sid (you'll need a
newer kernel as well, either 2.6.32-10 from sid or 2.6.33 from
experimental). For this you will need to enable Kernel modesetting. add
radeon to /etc/modules and put options radeon modeset=1 in /etc/modprobe.d/radeon-kms.conf (you'll probably need to create the file).
Report back when you can with your results
Andres
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