My experience on Radeon X800 is, that forget all the rest of the options, but do _enable_ Option "XAANoOffscreenPixmaps" "true". I think "dri" really does nothing, "RenderAccel" might affect some things negatively but probably does nothing, and AccelMethod EXA definitely breaks things.
In default configuration, I get mostly blank white windows when using compiz. If I only add that one option to xorg.conf, compiz and beryl both work. -- Xorg radeon driver is slower in feisty, some gtk-buttons gets scrambled https://launchpad.net/bugs/91661 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
