On Thu, Jun 16, 2016 at 2:12 AM, Rafael J. Wysocki <raf...@kernel.org> wrote: > On Thu, Jun 16, 2016 at 12:15 AM, Peter Jones <pjo...@redhat.com> wrote: >> Right now when booting, on many laptops the firmware manages the PCIe >> bus. As a result, when we call the _OSC ACPI method, it returns an >> error code. Unfortunately the errors are not very articulate. > > What exactly do you mean here? > >> As a result, we show: >> >> ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-fe]) >> acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI] >> \_SB_.PCI0 (33DB4D5B-1FF7-401C-9657-7441C03DD766): _OSC invalid UUID >> _OSC request data: 1 1f 0 > > So _OSC told us that the UUID was invalid, didn't it?
BTW, the above messages are KERN_DEBUG, so at least in theory they shouldn't be visible in production runs. Maybe the bug to fix is that they show up when they aren't supposed to?
