I have noticed this problem with Quadro cards. It looks like the UBB (unified back buffer) of Quadro cards conflicts with the Composite extension.
** Changed in: xorg-server (Ubuntu) Status: Incomplete => Invalid -- xorg crashes - Fatal Server Error in ProcPolyPoint https://bugs.launchpad.net/bugs/223614 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs