Comment # 14 on bug 1199661 from B

(In reply to Takashi Iwai from comment #13)
> (In reply to B from comment #12)
> > Kernel 5.18.11 has broken the amd_pstate driver, or the method described
> > here no longer applies, and it no longer works.
> 
> How exactly broken?  Please give more details and logs.

It doesn't load the module anymore with your method described above.

when running 
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver 
as of kernel 5.18.11 it is no longer answering with "amd_pstate"
it says: "no such file or directory"