I forwarded this bug upstream to https://bugs.freedesktop.org/show_bug.cgi?id=23104 - I'd encourage you to subscribe to that.
They indicate that this is probably fixed by a couple xserver commits. I'm going to give a shot to seeing if it'd be hard to backport those to our 1.6.3 xserver, otherwise you may want to test using a newer xserver snapshot, which can be found in the xorg-edgers ppa. https://edge.launchpad.net/~xorg-edgers/+archive/ppa ** Bug watch added: freedesktop.org Bugzilla #23104 https://bugs.freedesktop.org/show_bug.cgi?id=23104 ** Also affects: xserver-xorg-driver-ati via https://bugs.freedesktop.org/show_bug.cgi?id=23104 Importance: Unknown Status: Unknown ** Changed in: xserver-xorg-video-ati (Ubuntu) Importance: Undecided => High ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: New => Triaged ** Changed in: xserver-xorg-video-ati (Ubuntu) Assignee: (unassigned) => Bryce Harrington (bryceharrington) -- Xserver crashes enabling visual effects https://bugs.launchpad.net/bugs/408293 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