I don't know if this help, but I suffer the same on an ATI X600m (PCIE). No AGP Card. But I can confirm that disabling KMS recovers a lot of performance.
-- [KMS][RV530] compiz very slow on Radeon AGP video cards https://bugs.launchpad.net/bugs/496653 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. _______________________________________________ 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
