Laptop ACPI poweroff failed after main-c255826 -> main-c255850

[David Wolfskill]

On Tue, Jan 12, 2021 at 07:37:28AM -0800, David Wolfskill wrote:
> On Tue, Jan 12, 2021 at 05:31:30PM +0200, Andriy Gapon wrote:
> > On 2021-01-11 14:55, David Wolfskill wrote:
> > > pci3: unknown notify 0x2
> > > ACPI Error: AE_ERROR, Thread 100002 could not acquire Mutex [ACPI_MTX_Caches] (0c4) (20201113/utmutex-434)
> > 
> > Looks like that was some sort of a race or otherwise transient condition
> > that lead to the _PTS (prepare-to-sleep) failure.
> > 
> > > ACPI Error: Aborting method \_PTS due to previous error (AE_NO_MEMORY) (20201113/psparse-689)
> > > acpi0: AcpiEnterSleepStatePrep failed - AE_NO_MEMORY
> > ....
> 
> That's certainly plausible -- as I noted a bit earlier today, there was
> no recurrence  after this morning's main-c255850-g16079c7233be ->
> main-c255894-g8b1839548750 update.
> 
> Should I encounter a recurrence, I will plan to get another screenshot,
> then bring the machine back up and re-try the poweroff (and then report
> my findings).
> ....

I had a recurrence this morninig, after the update from:

FreeBSD g1-55.catwhisker.org 13.0-CURRENT FreeBSD 13.0-CURRENT #120 main-c255894-g8b1839548750-dirty: Tue Jan 12 05:23:50 PST 2021     root at g1-55.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY  amd64 1300134 1300134

to:

FreeBSD g1-55.catwhisker.org 13.0-CURRENT FreeBSD 13.0-CURRENT #121 main-c255921-gec2700e01532-dirty: Wed Jan 13 05:06:22 PST 2021     root at g1-55.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY  amd64 1300135 1300135


New swcreenshot is in https://www.catwhisker.org/~david/FreeBSD/head/c255921;
the previous one is in https://www.catwhisker.org/~david/FreeBSD/head/c255850.

They look quite similar to me.

After grabbing the screenshot, I rebooted again, but the poweroff
just worked normally on re-try.

I believe that this is evidence in favor of a "race condition" diagnosis.
(In precisely what, I don't know,)

Peace,
david
-- 
David H. Wolfskill                              david at catwhisker.org
"What happened at the Capitol last Wednesday, then, wasn't the first
time Trump's base took him literally. It was the culmination of having
taken him literally the entire duration of his presidency." - Chris Cillizza

See https://www.catwhisker.org/~david/publickey.gpg for my public key.
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