Hi, to provide an example case, on Aspire One AOA110 v0.3310, 3.8-rc7 prints: [ 0.515599] ACPI Error: [CAPB] Namespace lookup failure, AE_ALREADY_EXISTS (2 0121018/dsfield-211) [ 0.515629] ACPI Error: Method parse/execution failed [\_SB_.PCI0._OSC] (Node f5449680), AE_ALREADY_EXISTS (20121018/psparse-537) [ 0.515672] ACPI: Marking method _OSC as Serialized because of AE_ALREADY_EXISTS error [ 0.516081] ACPI Error: [CAPB] Namespace lookup failure, AE_ALREADY_EXISTS (20121018/dsfield-211) [ 0.516107] ACPI Error: Method parse/execution failed [\_SB_.PCI0._OSC] (Node f5449680), AE_ALREADY_EXISTS (20121018/psparse-537) [ 0.516168] pci_root PNP0A08:00: ACPI _OSC support notification failed, disabling PCIe ASPM [ 0.516179] pci_root PNP0A08:00: Unable to request _OSC control (_OSC support mask: 0x08) HTH, Andreas Mohr -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html