I'm affected by this bug on Ubuntu 10.10 (maverick). I'm seeing the same symptoms as the original reporter & the mentioned workaround solves the problem.
kernel 2.6.35-30-generic xserver-xorg-video-ati 1:3.13.1-1ubuntu5 ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] [1002:4c66] (rev 01) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/539163 Title: [Legacy Radeon cards] Desktop effects/compiz: display brightness fluctuation with zoom, workspace switch or Expo To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/539163/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
