I think this bug is related to kernel issue on HP laptops, where ACPI is in strange state after resume from hibernate.
Good description about the problems involved from SuSE: https://bugzilla.novell.com/show_bug.cgi?id=179702#c103 Two patches that seems to help are available in these two bugs: http://bugzilla.kernel.org/show_bug.cgi?id=7570 http://bugzilla.kernel.org/show_bug.cgi?id=5534 ** Changed in: acpi-support (Ubuntu) Sourcepackagename: acpi-support => linux-source-2.6.20 -- battery info does not change after hibernate (HP nw8240) https://launchpad.net/bugs/63123 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs