OK, based on the upstead "Fix Released" status, I'll assume this is fixed in 12.04. Thanks everyone for your patience!
** Changed in: upower (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/531190 Title: upower (devkit-power) reporting bad data when AC cable is unplugged To manage notifications about this bug go to: https://bugs.launchpad.net/devicekit-power/+bug/531190/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs