Apparently, this bug and freedesktop-bugs #61152 are not related. Going back to the original userspace backtrace, can we get a core file from when this occurs? If you're using apport, this crash should be in /var/crash.
** Bug watch removed: freedesktop.org Bugzilla #61152 https://bugs.freedesktop.org/show_bug.cgi?id=61152 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1114872 Title: Xorg freeze To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1114872/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs