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#1 2022-01-08 07:37:49

skiars
Member
Registered: 2022-01-08
Posts: 2

CPU frequency is too low in Huawei MateBook X Pro 2021

Here is my system info:

Operating System: Arch Linux
KDE Plasma Version: 5.23.5
KDE Frameworks Version: 5.89.0
Qt Version: 5.15.2
Kernel Version: 5.15.13-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® Xe Graphics

There are some cores that can run up to 4.2GHz when the system is idle, but at full load all core frequencies drop to about 1.2GHz. I tested it on Windows, and the full load frequency can be stable at around 2.5GHz (of course, the laptop doesn't get very hot in Linux.).

I don't know what to do, is there any way to keep the core frequency higher in ArchLinux?

Last edited by skiars (2022-01-08 07:40:05)

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#2 2022-01-08 08:37:29

seth
Member
Registered: 2012-09-03
Posts: 26,449

Re: CPU frequency is too low in Huawei MateBook X Pro 2021

https://wiki.archlinux.org/title/CPU_frequency_scaling (likely performance governor) but before doing any of this see https://wiki.archlinux.org/title/Microcode

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#3 2022-01-08 10:28:53

skiars
Member
Registered: 2022-01-08
Posts: 2

Re: CPU frequency is too low in Huawei MateBook X Pro 2021

I just updated the microcode and I'm using intel_pstate, but the frequency limit still seems to be there (about 1.6GHz at full load).

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#4 2022-01-08 14:47:34

seth
Member
Registered: 2012-09-03
Posts: 26,449

Re: CPU frequency is too low in Huawei MateBook X Pro 2021

Do you also patch the microcode (early)?
Also check the conditions in /sys/devices/system/cpu/intel_pstate/ (notably turboboost and governor)

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