I have almost identical problem (even made duplicate in #243243 ;) ). I'm attaching lshal and lshal -m outputs.
** Attachment added: "lshal.txt" http://launchpadlibrarian.net/15625919/lshal.txt -- [Hardy] Guidance-power-manager doesn't know when laptop is mains unplugged https://bugs.launchpad.net/bugs/213128 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs