It seems this has been reported and partially diagnosed upstream: http://bugzilla.gnome.org/show_bug.cgi?id=361583
Based on that upstream bug's discussion and my own reading of the g-p-m source code, I am confident that my problem is not related to ACPI: it is clear from the g-p-m source that when all battery events are being generated properly, it will still trigger a critical low power shutdown if any one battery becomes empty, even if other full batteries are present in the system. -- 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
