The only thing that I've done is revert xserver-xorg-core to 1.1.1-0ubuntu12 and compiz returned to work.
-- xserver-xorg-core_1.1.1-0ubuntu13_i386 breaks compiz/beryl (white screen) https://launchpad.net/bugs/79196 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
