The first problem I can see is that this machine is using the 'intel' graphics driver for the Intel GPU. That's a mistake as it's an old driver. The Intel GPU should be using the 'modeset' driver. Please remove the 'intel' driver from your Xorg config files and/or just uninstall the package 'xserver-xorg-video-intel' and reboot.
If the heat problem still persists then next please run 'top' to confirm which process is using the most CPU. ** Changed in: xorg (Ubuntu) Status: New => Incomplete ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879484 Title: Lenovo X1 Extreme with thunderbolt docking station causes overheat with concert of fans To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1879484/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs