Thermal/power management settings not restored on S3 resume path

[marmarek]

Component

Dasharo firmware

Device

NovaCustom V54 14th Gen

Dasharo version

v1.0.0

Dasharo Tools Suite version

No response

Test case ID

No response

Brief summary

Debugging of QubesOS/qubes-issues#10616 lead to finding that after resume Xen complains about CPU thermals:

(XEN) CPU0: Temperature above threshold
(XEN) CPU0: Running in modulated clock mode
(XEN) CPU0: Temperature/speed normal
(XEN) CPU0: Temperature above threshold
(XEN) CPU0: Running in modulated clock mode
(XEN) CPU0: Temperature/speed normal
(XEN) CPU0: Temperature above threshold
(XEN) CPU0: Running in modulated clock mode
(XEN) CPU0: Temperature/speed normal
(XEN) CPU0: Temperature above threshold
(XEN) CPU0: Running in modulated clock mode
(XEN) CPU0: Temperature/speed normal
(XEN) CPU0: Temperature above threshold
(XEN) CPU0: Running in modulated clock mode

And it remains in that state - note there is no final CPU0: Temperature/speed normal, it remains in "modulated clock mode", at least according to Xen. Physically, the laptop is cold, it's fresh after resuming and idle. No way it's really hitting high temperatures.

BTW, due to a related Xen issue, after S3 the information is reported only for CPU0. After fixing that, it properly gets reported for other CPUs too, and for all of them it ends up in "modulated clock mode".

How reproducible

Always?

How to reproduce

1. Start Qubes OS 4.3
2. Suspend
3. Resume
4. Wait a little (like 30s)
5. Observe xl dmesg

There is also more high level test for the performance degradation after S3, but it involves waiting much longer after resume (at lest 30min): QubesOS/qubes-issues#10616 (comment)

Expected behavior

Ideally no messages about temperature above threshold. But if there is any, there should be also matching message about returning to normal mode.

Actual behavior

Last message is Running in modulated clock mode

Screenshots

No response

Additional context

I see also somebody reported similar issue on NV41, but I haven't verified it there.

Solutions you've tried

No response