Good find. The update-manager does seem to have its own way of determining the power status. I am going to contact the dev's on this matter and see if there is a reason U-M is trying to access G-P-M. I will get back to you regarding this issue as soon as I get a response. Marking Confirmed for now.
** Changed in: update-manager (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/714356 Title: update-manager starts gnome-power-manager -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs