After chatting w/slangasek and jodh on IRC, they feel it could be an X or lightdm bug. Possibly LP: #969489 related. I'm going to attach some logs.
** Changed in: linux (Ubuntu) Status: Incomplete => New ** Also affects: lightdm (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1061149 Title: boot occasionally hangs while "Checking battery state..." To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1061149/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs