So, if it is interesting for anyone. I got some trouble with Manjaro and switched back to Linux Mint. I also updated Coreboot to 4.11 - After a while I got the weired fan back and it seems again that a kernel update (from 5.0 to 5.3) solved this issue for me. Because I did the same TLP CPU_HWP edit (to get sure that this won’t happen) but afterwards the fan got still mad. With the following kernel update everything is fine, till now.