Arch Linux

Lax Lexis

Member

Registered: 2013-09-30

Posts: 91

[amd_pstate] Since linux 6.x no cpu scaling for amd available

Hello everyone,

since the new linux 6.x the amd_pstate should be integrated in the kernel but my cpupower doesn't lists the governors anymore. Please see screenshot.

My kernel: Linux 14ACN6 6.1.5-arch2-1 #1 SMP PREEMPT_DYNAMIC Thu, 12 Jan 2023 22:42:33 +0000 x86_64 GNU/Linux
The command "lsmod | grep amd_pstate" doesn't list anything.

Last edited by Lax Lexis (2023-01-14 09:11:41)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,104

Re: [amd_pstate] Since linux 6.x no cpu scaling for amd available

amd_pstate is a built-in so it's expected to not list anything in lsmod. Check dmesg, you may want to boot with amd_pstate="active" on the kernel parameters

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,694

Re: [amd_pstate] Since linux 6.x no cpu scaling for amd available

amd_pstate is built in, but it's not the default yet. You need to add amd_pstate=passive to the kernel command line to use it. Note that amd_pstate=active won't do anything until the EPP patches are merged, currently targeting 6.3.

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,731

Website

Re: [amd_pstate] Since linux 6.x no cpu scaling for amd available

^^^ what he said.

You can verify with cpupower frequency-info ... should show:

driver: amd-pstate

---

AUR packages • Zsh and other configs

Lax Lexis

Member

Registered: 2013-09-30

Posts: 91

Re: [amd_pstate] Since linux 6.x no cpu scaling for amd available

Thanks to all!

amd_pstate is built in, but it's not the default yet. You need to add amd_pstate=passive to the kernel command line to use it. Note that amd_pstate=active won't do anything until the EPP patches are merged, currently targeting 6.3.

"amd_pstate=passive" did it.