Done a bit more testing and it appears to be solely the presence of the external monitor that renders the lock screen unlockable.
The simple lock screen works OK with an external monitor, it's only the widget enabled lock screen that is affrected. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1325614 Title: Cannot unlock screen in KDE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1325614/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs