This applies to me too. I own an HP Compaq nx7400. It always happens when I boot on battery, very often when I boot on AC and sometimes when I change power status.
I don't know if it's an HP' BIOS bug or a problem in the kernel (the battery module in ACPI subsystem). -- Battery status not updated on HP nx6325 (edgy 6.10) https://launchpad.net/bugs/68064 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs