This occurs for me when the laptop resumes from being suspended, as well as when I leave the laptop idle for long enough that the screen turns off.(i.e. the screen locks, then after a few more minutes the system cuts power to the screen).
** Attachment added: "settings.txt" https://bugs.launchpad.net/ubuntu/+source/unity-2d/+bug/830348/+attachment/2582191/+files/settings.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in Ubuntu. https://bugs.launchpad.net/bugs/830348 Title: desktop contents briefly visible on resume from suspend before lock dialog To manage notifications about this bug go to: https://bugs.launchpad.net/unity-2d/+bug/830348/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs