I hit this with my Thinkpad X60 as well. Neither killing compiz nor gnome-screensaver solves it, only restarting lightdm will do. I'll have the dstack script when this happens again so I can get the stack trace for you.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996770 Title: Lock screen is occasionally solid black except for mouse cursor after resuming from suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/996770/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
