System is HP Compaq dc7800p Small Form Factor, Core 2 duo. BIOS updated from 1.04 to 1.28 - no difference. This occurs in Jaunty with kernel 2.6.28.x Have also tried 2.6.30.10 from http://kernel.ubuntu.com/~kernel-ppa/mainline/ Errors (from kernel 2.6.30-10): ACPI Error (dsfield-0143): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS (occurs many times) ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node f7015a08), AE_ALREADY_EXISTS (occurs many times) ACPI Warning for \_SB_.PCI0._OSC: Parameter count mismatch - ASL declared 5, ACPI requires 4 (20090903/nspredef-336) ACPI Error (dsfield-0140): [CAPD] Namespace lookup failure, AE_ALREADY_EXISTS (occurs many times) ACPI: Marking method _OSC as Serialized because of AE_ALREADY_EXISTS error ACPI Warning (nspredef-0331): \_SB_.PCI0._OSC: Parameter count mismatch - ASL declared 5, ACPI requires 4 [20090320] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0._OSC] (Node f7014a08), AE_ALREADY_EXISTS (occurs many times) A similar error is posted at bugzilla.kernel.org #8360 I have attached the report from acpidump
** Attachment added: "Output of acpidump from kernel 2.6.30-10" http://launchpadlibrarian.net/39135682/acpidump.txt -- Repeated ACPI Errors and Exceptions in Log Files https://bugs.launchpad.net/bugs/376367 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs