I see the performance problem in normal GUI as well as video playback on a fresh install of Lucid with card Radeon 7000. Turning off KMS makes the performance issue go away. Let me know what other details you need.
** Changed in: xserver-xorg-video-ati (Ubuntu) Status: Fix Released => Confirmed -- [RS100] desktop became slow after upgrading to Lucid https://bugs.launchpad.net/bugs/544496 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs