[Stable Update] 2022-06-12 - Kernels, Systemd 251, GNOME 42.2, KDE Gear 20.04.2, NVIDIA, Mesa, Pulseaudio, Pipewire, LibreOffice

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I looked at the kernel sources on Manjaro gitlab and amd_pstate is now built as a module in 5.18. That’s why it loads automatically for me in 5.17 but not 5.18.

What is the reason for this change?

$ grep PSTATE linux517/config
CONFIG_X86_INTEL_PSTATE=y
CONFIG_X86_AMD_PSTATE=y

$ grep PSTATE linux518/config
CONFIG_X86_INTEL_PSTATE=y
CONFIG_X86_AMD_PSTATE=m

So the steps given in this post are correct and worked for me. Ignore the module not found errors for all other kernels, it’s just correctly telling you that the module is only in 5.18.