I had this problem with my new feisty beta installation. Beryl also did not performed correctly. Adding Option "XAANoOffscrenPixmaps" "true" to your xorg.conf to the device section worked and now desktop effects perform as well as you can expect with the oss ati drivers.
-- desktop-effects doesn't start compiz correctly https://launchpad.net/bugs/80734 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
