Ubuntu
xserver-xorg-video-ati package

  1. Bug #144077
  2. Comment #50

Comment 50 for bug 144077

Revision history for this message
Jerone Young (jerone) wrote : Re: [gutsy] Regression - "Desktop effects could not be enabled" on ATI Mobility Radeon

@ Gabriel Grant

 Yeah your best bet is a USB CDrom drive. The error I would bet while under the live cd is in dmesg:

[ 114.748000] [drm:radeon_cp_init] *ERROR* radeon_cp_init called without lock held
[ 114.748000] [drm:drm_unlock] *ERROR* Process 8080 using kernel context 0

there maybe more. But what I have found though is that the desktop effects (using compiz) are just not very stable. It works good for a while, then it will totally lock the machine. Well at least the video, tasks are still running on the machine. Basically you can't do anything. I just ended up turning it off completely.