I had never experienced this problem until I ran updates this last weekend (archlinux).
The following packages (ones that seem like they might be relevant) were updated: [2014-12-06 14:23] [PACMAN] upgraded phonon-qt4-gstreamer (4.8.0-2 -> 4.8.1-1) [2014-12-06 14:23] [PACMAN] upgraded phonon-qt4 (4.8.2-1 -> 4.8.3-1) [2014-12-06 14:23] [PACMAN] upgraded xapian-core (1:1.2.18-1 -> 1:1.2.19-1) [2014-12-08 01:51] [PACMAN] upgraded libdbus (1.8.10-1 -> 1.8.12-1) [2014-12-08 01:51] [PACMAN] upgraded dbus (1.8.10-1 -> 1.8.12-1) [2014-12-08 01:51] [PACMAN] upgraded ffmpeg (1:2.4.4-1 -> 1:2.5-1) [2014-12-08 01:51] [PACMAN] upgraded lib32-libdbus (1.8.10-1 -> 1.8.12-1) [2014-12-08 01:51] [PACMAN] upgraded lib32-mesa-dri (10.3.4-1 -> 10.3.5-1) [2014-12-08 01:51] [PACMAN] upgraded mesa-dri (10.3.4-1 -> 10.3.5-1) [2014-12-08 01:51] [PACMAN] upgraded mesa (10.3.4-1 -> 10.3.5-1) [2014-12-08 01:51] [PACMAN] upgraded lib32-mesa (10.3.4-1 -> 10.3.5-1) [2014-12-08 01:51] [PACMAN] upgraded libevdev (1.3.1-1 -> 1.3.2-1) Now, I can activate the desktop widgets locker from the settings and everything works fine. However if it is legitimately activated (from key-chord to lock desktop, time-out, closing laptop lid, etc.), then the locker does not show up, I just see my desktop but I can't interact with it. Only way I know of to get out of this state is by restarting the X server (Ctrl+Alt+Backspace or "systemctl restart kdm"). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1252662 Title: Invisible lock screen in KDE To manage notifications about this bug go to: https://bugs.launchpad.net/kde-workspace/+bug/1252662/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
