I have exactly the same problem (screen freezes for a second or two, then goes black, then the lightdm login screen appears and I have to log into a new session. Happens at apparently random times, several times a day, generally when doing very light tasks) but I have intel graphics (Thinkpad T410).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1045519 Title: Xorg crashes persistently To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1045519/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
