Pretty sure I've identified and resolved the root cause for this issue. Fix committed below.
https://bazaar.launchpad.net/~lightdm-gtk-greeter-team/lightdm-gtk- greeter/trunk/revision/382 ** Also affects: lightdm-gtk-greeter Importance: Undecided Status: New ** Changed in: lightdm-gtk-greeter Status: New => Fix Committed -- 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/lightdm-gtk-greeter/+bug/1509780/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs