Michael: Can you do: sudo acpi_listen
and capture the event that is sent for each of: (a) removing the ultrabay battery (b) inserting the ultrabay battery (c) removing the internal battery (d) inserting the internal battery -- Dual / Two Batteries, shutdown on empty expansion battery. (GPM does not recognises second battery on hotplug) https://launchpad.net/bugs/60442 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs