Ubuntu
xserver-xorg-video-ati package

  1. Bug #144077
  2. Comment #20

Comment 20 for bug 144077

Revision history for this message
Sergio Zanchetta (primes2h) wrote : Re: [gutsy] Regression - "Desktop effects could not be enabled" on ATI Mobility Radeon

Yes Travis, I had doubts too about compiz.

In the meantime I found there is a problem in the way drm and radeon modules are loaded I think.

Using Gutsy live cd I found this workaround.

1) Go to ALT+F1 console.
2) stop gdm $ sudo /etc/init.d/gdm stop
3) unload radeon and drm modules $ sudo rmmod radeon drm
4) reload drm and radeon modules in this order $ sudo modprobe drm radeon
5) start gdm again $ sudo /etc/init.d/gdm start

It works for me.