On 2020-04-15 07:29, tu...@posteo.de wrote: > The configuration for kernel 5.6.3. (vanilla) works fine.for me. Then > I changed to kernel 5.6.4 using the same configuration. > > Suddenlu the fan at the back of my PC case never stops from rotating > at its highest speed. Changing back to kernel 5.6.3. and the problem > is gone.
Something similar happened to me too with a recent kernel upgrade but in the 5.4's. The reason was that my kernel config changed to build the default CPU powersave driver as a module, and apparently that is a poor idea, it needs to be built in. When I rebuilt the kernel with the driver built in, the fan went back to normal. In your case: are both scenarios on the same hardware, since as we all know you're just switching? -- Ian
