ACPI errors revisited
A few weeks ago I started seeing error lines on a black screen at the
start of the f25 boot process, but only recently have I found them in
dmesg and examined them.
[ 0.110117] ACPI BIOS Error (bug): \_SB.PCI0._OSC: Excess arguments -
ASL declared 5, ACPI requires 4 (20170119/nsarguments-189)
[ 0.110213] ACPI Error: [CAPD] Namespace lookup failure,
AE_ALREADY_EXISTS (20170119/dsfield-211)
[ 0.110262] ACPI Error: Method parse/execution failed
[\_SB.PCI0._OSC] (Node ffff961f970b8820), AE_ALREADY_EXISTS
(20170119/psparse-543)
[ 0.110320] acpi PNP0A08:00: _OSC failed (AE_ALREADY_EXISTS);
disabling ASPM
[ 0.110329] acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain
0000 [bus 00-3f] only partially covers this bridge
Their first appearance followed an MB battery change. Nothing seemed
broken, and I took little notice. But now I see the date 20170119,
which implies something in software. google found
https://lkml.org/lkml/2017/4/10/1232, 'PCI IRQ allocation broken' - with
undesirable effects.
That's linked to
https://bugzillakernel.org/show_bug.cgi?id=195319
which is marked as a duplicate of BZ 195311 and closed.
Perhaps coincidentally, one of my pci devices (onboard audio)
unexpectedly got disabled when I changed a video card. Details on the
rpmfusion list. The audio is working again after a BIOS edit, but I'm
still seeing the errors above in dmesg. The BIOS manual suggests that
ACPI will override the BIOS setting. I'm confused.
John P