Ubuntu
xserver-xorg-video-ati package

  1. Bug #496653
  2. Comment #39

Comment 39 for bug 496653

Revision history for this message
Tpugliese (thomas-pugliese) wrote : Re: [KMS][RV530] compiz very slow on AGP hardware

I see this problem as well, but not 100% of the time. It seems that I can get usable 3D performance with KMS if I reboot with radeon.modeset=0, select "Normal" for Visual Effects, then reboot again with radeon.modeset=1. It's still not great compared to when KMS is disabled but much better than if I boot with KMS enabled then start compiz after logging in.

I have been able to use this workaround twice now after running in the slow desktop problem.