According to https://wiki.ubuntu.com/Bugs/FindRightPackage the gnome- power-manager package is most likely to cause the bug.
** Package changed: ubuntu => gnome-power-manager (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/998735 Title: Light blue screen on primary monitor when waking up from inactivity To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/998735/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
