Same issue, seems to only happen when external monitors are connected to the laptop (Thinkpad T460p with docking station). Xorg also experiences higher than normal CPU usage during those periods. Greeter itself seems to work at least partially (sluggish, text missing from error messages).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1509780 Title: High cpu usage when lightdm screenlock is active To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1509780/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
