An update. After some digging the conclusion I is that the problem in my case is not linux but might be the Asus BIOS. Even just enetering the BIOS the CPU temperature is rising up to 70-80 degrees. I'v e also upgraded the BIOS, but without significant improvements.
I have the impression the BIOS has problems in dealing with the intel turbo boost technology of my i7-8th generation. Disabling the turbo from linux side (I couldn't from the BIOS) the temperatures of my laptop are now fine.
An update. After some digging the conclusion I is that the problem in my case is not linux but might be the Asus BIOS. Even just enetering the BIOS the CPU temperature is rising up to 70-80 degrees. I'v e also upgraded the BIOS, but without significant improvements.
I have the impression the BIOS has problems in dealing with the intel turbo boost technology of my i7-8th generation. Disabling the turbo from linux side (I couldn't from the BIOS) the temperatures of my laptop are now fine.