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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1768976 Title: Ubuntu 18.04 is overheating after upgrade from 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768976/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs