Do you have a nvidia card? If so, which one? And which video driver do you have? Has it been recently updated?
This looks like the driver has been changed, and it no longer supports desktop-effects, which is what has happened with the nvidia driver and some old cards ** Changed in: compiz (Ubuntu) Importance: Undecided => High Status: Unconfirmed => Needs Info -- [apport] compiz.real crashed with SIGSEGV in outputDeviceForWindow() https://launchpad.net/bugs/97423 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs