Re: power-off delay/hang due to commit 6d25be57 (mainline)

[Rafael J. Wysocki]

On Tue, Aug 11, 2020 at 3:29 PM Sebastian Andrzej Siewior
<bigeasy@xxxxxxxxxxxxx> wrote:
>
> On 2020-08-11 13:58:39 [+0200], Stephen Berman wrote:
> > him about your workaround of adding 'thermal.tzp=300' to the kernel
> > commandline, and he replied that this works for him too.  And it turns
> > out we have similar motherboards: I have a Gigabyte Z390 M Gaming
> > Rev. 1001 board and he has Gigabyte Z390 Designare rev 1.0.
>
> Yes. Based on latest dmesg, the ACPI tables contain code which schedules
> the worker and takes so long. It is possible / likely that his board
> contains the same tables which leads to the same effect. After all those
> two boards are very similar from the naming part :)
> Would you mind to dump the ACPI tables and send them? There might be
> some hints.

Do we have a BZ for this?  It would be useful to open one if not.

> It might be possible that a BIOS update fixes the problem but I would
> prefer very much to fix this in kernel to ensure that such a BIOS does
> not lead to this problem again.

I agree.

It looks like one way to address this issue might be to add a rate
limit for thermal notifications on a given zone.