This seems to be the issue in kernel/acpi/hal which reports strange remaining_time on some cases (in your case even insertion of CD).
> Worse, it forces hibernation when the battery still has plenty of capacity left. What is the level at this point in time? Is it below 50%? guidance- power-manager has CHARGE_LEVEL_THRESHOLD at 50%, which should prevent critical action if battery level is above 50%. I think this is a bit high (5-15% might be more appropriate), but I would like to confirm that you were below 50% when this happened (so that we know this threshold works). -- guidance-power-manager thinks battery is low way too early https://launchpad.net/bugs/67081 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
