The black video problem is a limitation in your driver. The empty windows is probably because you don't have this in your Device section: Option "XAANoOffscreenPixmaps"
What video driver are you using? ** Changed in: compiz (Ubuntu) Status: Unconfirmed => Needs Info -- black sreen in Compiz and no fonts https://launchpad.net/bugs/89628 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs