How to Override hwp-internal as CPU Governor in QubesOS?

[Gabriel Alpho <alphogabriel@xxxxxxxxx>]

Hey everyone!

I’ve been trying to gain full control over my CPU frequency scaling in QubesOS, but I’m stuck with hwp-internal as the governor. No matter what I try, Xen (or the kernel) keeps forcing hwp-internal, preventing me from manually setting CPU frequencies.

What I’ve Tried So Far:

Disabled Turbo Boost using xenpm disable-turbo-mode 0-15 – Worked fine.
Set max frequency with xenpm set-scaling-maxfreq – Ignored, still running at max clock.
Added hwp=0 to Xen GRUB parameters – No effect, still stuck on hwp-internal.

My Question:

Is it possible to fully disable or override hwp-internal so I can manually control CPU scaling?
Or is my CPU locked into hwp-internal with no way to change it in QubesOS?

System Specs:

• QubesOS Version: 4.2 (R4.2)
• Kernel Version: 6.6.77-1.qubes.fc37.x86_64
• Scaling Driver: hwp-cpufreq
• Current Governor: hwp-internal
• CPU Model: GenuineIntel 12th Gen Intel(R) Core(TM) i7-12650H

If anyone has experience dealing with this in QubesOS/Xen, I’d really appreciate any guidance!

Thanks in advance!

Stevenn

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