It seems this is more widely spread problem which causes problems both for gnome-power-manager (Ubuntu) as well as guidance-power-manager (Kubuntu).
It looks like that some ACPI events (like unplug of AC, one battery getting empty, or even eject of CD...) can cause battery remaining_time to be "reset" or at least being recalculated. Since gnome (at least by default) uses remaining_time property for critical action handling, this can cause automatic action (like hibernation or shutdown). In KDE, we have CHARGE_LEVEL_THRESHOLD at 50% (which is a bit high) which prevents critical action if charged above that level. Related bugs with notes when the action is triggered: - bug 60442: gnome: one of two batteries is completely discharged (flat) - bug 64752: kde: one of two batteries is completely discharged (flat) - bug 67180: gnome: on unplug of AC - bug 67081: kde: on CD load (may be unrelated) -- 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
