X backtrace after sysrq+k by following https://wiki.ubuntu.com/X/Backtracing
** Attachment added: "gdb-Xorg_after_SAK.txt" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/711908/+attachment/1851909/+files/gdb-Xorg_after_SAK.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/711908 Title: [natty] frequent nouveau freeze on GT218 [NVS 3100M] (rev a2) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs