CPU frequency scaling not working?!

Hi

It seems like CPU frequency scaling won’t work on my Tumbleweed installation since kernel 4.12 (it’s the same with 4.13). The CPU always run at max frequency, even if i set it to ondemand. My CPU is a Ryzen 1600 and AMD cool’n quiet is enabled in bios.

So my question is, if somebody knows whats changed or whats eventually wrong?

CPU frequency scaling is working just fine. It was my plasma applet that didn’t work!

Sorry about my kind of stupid question here…