Re: how to use amd-pstate - ?

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On Sat, 2022-10-29 at 12:01 +0100, lejeczek via users wrote:
> Hi guys.
> 
> Does anybody use 'amd-pstate' and if yes could share a howto 
> on how to have Fedora use that driver?
> 
> many thanks, L.
> 

If you have a Zen2 or newer AMD processor, you can use a grubby command
in a terminal to set the needed kernel argument:

sudo grubby --update-kernel DEFAULT --args "initcall_blacklist=acpi_cpufreq_init"

Then, after a reboot, you can use this command to see if it worked:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver

If that says something other than amd-pstate then it did not work, and
you can try adding another kernel argument and then rebooting:

sudo grubby --update-kernel DEFAULT --args "amd_pstate.shared_mem=1"


-- 
Terveisin / Regards,
Matti Pulkkinen

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