GNOME. Eagerly waiting for cosmic.

PPD comes default on most distros (I can at least confirm for Debian, Ubuntu and Fedora on the GNOME variant). I am not sure about KDE variants but they should support it too even if it’s not pre-installed.

You can check if it’s running with the following command:

$ sudo powerprofilesctl

However as the 0.20 release which supports p-state just released recently most fixed point release distros won’t have the newer version. In this case you would need to update it manually.

I am running Debian testing and it has the new version while stable does not.

https://packages.debian.org/trixie/power-profiles-daemon

Also want to appreciate the idle efficiency improvements! My AMD laptop only loses a few % of battery life after idling overnight (with the default s2idle sleep mode). A huge improvement to my older work Intel ThinkPad which loses over 25% overnight…

Yes, Zen 2 and above support p-states! You might need to update your bios and enable CPPC if p-state is not showing up.

You can confirm by running $ sudo powerprofilesctl and seeing if CpuDriver is amd_pstate.