I just ran into this after resuming from hibernate. As a workaround, sending a SIGTERM to the lightdm children other than the one which is your actual session seems to resolve the issue. Presumably one of these is the lock screen session; killing it leads to it being re-spawned, at which the point the screen is restored to a sensible state and the lock screen appears, without needing to kill all the running applications. This can be done from the terminal with sudo/root.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1303736 Title: [SRU] Black screen after wakeup from suspending by closing the laptop lid To manage notifications about this bug go to: https://bugs.launchpad.net/xfce4-power-manager/+bug/1303736/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
