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#1 2022-09-19 00:42:55

fbievan
Member
Registered: 2021-08-04
Posts: 4

[Solved] Plugging in laptop se to lock the cpu frequency to 0.399 ghz

\Basically, The cpu locks when the laptop is plugged into a wall, therefore causing awful peformance.

I have tried removing all kernel modules (with modprobe -r)  relating to cpufreq: acpi_cpufreq, and some other ones mentioned in the archwiki and from
ls /usr/lib/modules/$(uname -r)/kernel/drivers/cpufreq/

acpi-cpufreq.ko.zst          amd_pstate.ko.zst   pcc-cpufreq.ko.zst  speedstep-lib.ko.zst
amd_freq_sensitivity.ko.zst  p4-clockmod.ko.zst  powernow-k8.ko.zst

Heres  A printout of some important infomation

OS: Arch Linux x86_64
Host: HP Pavilion Gaming Laptop 15-ec1xxx
Kernel: 5.19.9-arch1-1
CPU: AMD Ryzen 5 4600H (12) @ 3GHz

Here is a video showing the problem
https://cdn.social.linux.pizza/v1/AUTH_ … 58db08.mp4

I dont know really what to debug from here, hence why i'm on the fourms now.

Last edited by fbievan (2022-09-20 23:52:58)

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#2 2022-09-19 21:05:09

fbievan
Member
Registered: 2021-08-04
Posts: 4

Re: [Solved] Plugging in laptop se to lock the cpu frequency to 0.399 ghz

This also happens in
The archlinux iso
The endeavor os iso
Basically any Linux iso

Last edited by fbievan (2022-09-19 22:37:58)

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#3 2022-09-20 07:04:48

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 17,032

Re: [Solved] Plugging in laptop se to lock the cpu frequency to 0.399 ghz

Firmware bug, these happen occasionally, check for a UEFI/BIOS update.

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#4 2022-09-20 23:50:01

fbievan
Member
Registered: 2021-08-04
Posts: 4

Re: [Solved] Plugging in laptop se to lock the cpu frequency to 0.399 ghz

OK so apparently I'm fucking dumb or HP is dumb:

OK so I was using a 45w power supply, but apperantly I did not know cause I'm a dumbass. But this caused issues and HP didnt tell me 'hey you should use a better power supply', but instead just throttled my CPU on power supply. Very annoying that I had to figure out this

Last edited by fbievan (2022-09-20 23:55:56)

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