It looks like the changes in 1.2.3-0ubuntu2.6 may have changed the timing slightly and exposed an existing bug (possibly bug 836616). @timothyowens tested a fix from lp:lightdm/1.2 so I've released 1.2.3-0ubuntu2.7 with that.
** Changed in: lightdm (Ubuntu) Status: Confirmed => 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/1431654 Title: lightdm (1.2.3-0ubuntu2.6) 100%/high cpu usage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1431654/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs