You are probably missing the Option "XAANoOffsceenPixmaps" "true" in your Device Section.
Anyway, if it does not work, it's not a desktop-effects problem, but a driver or compiz bug. -- Can't enable Desktop Effects https://launchpad.net/bugs/90301 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
