Riddle me this: unsolicited orderly shutdown

[Noam Meltzer]

This takes me back ~15 years.
We had Sun x86_64 servers, which randomly decided to shutdown. After
investigation it appeared that the problem was that the computer wrongly
decided it's too hot and sent ACPI command to shutdown.
Long story short - firmware update solved it.

Bottom line, have you tried the latest firmware for your XPS15?

On Fri, Mar 12, 2021 at 12:18 PM Shachar Shemesh <shachar at shemesh.biz>
wrote:

> Allow me, if I may, to set up the stage for you.
>
> I don't know the precise scenario that causes this to happen, but one
> thing that triggers it reliably is starting up X-Plane 11 and taking off. A
> few second and up to a minute into the flight, my KDE "shutting down"
> screen comes up. If I cancel the shutdown, the screen comes up one more
> time on its own, and then the computer just shuts down.
>
> Now, I know what you're all thinking. So I ran X-Plane while monitoring
> the CPU's and GPU's temperatures. Sure enough, they get hot. I opened up
> the laptop (Dell XPS 15, a gamer's laptop), cleaned the fans, and ran the
> game again. Temperatures were much more reasonable. But the shutdown screen
> popped up again.
>
> I ran it with dmesg running. While there are some temperature throttling
> messages, not a lot, and none that claim I *have* to shut down.
>
> I am looking for a way to debug this. Obviously, something in the hardware
> gives the command to shut down the computer. I have, however, not been able
> to find out what and why.
>
> Does anyone have any idea which system might be issuing this command, and
> where it might be writing its logs?
>
> Shachar
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