Same thing happens for me. Very annoying. Happens almost every 5th resume attempt. I need to reboot or kill my X session.
DistroRelease: Ubuntu 16.04 LightDM: 1.18.2-0ubuntu2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1465974 Title: LightDM lock screen unresponsive after resume from suspend (Lenovo Yoga 2 Pro) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1465974/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs