Unplugging my second display (which was plugged into the USB-C (thunderbolt) port) gets me:
<root@hero>:~# cat /sys/kernel/debug/pmc_core/package_cstate_show Package C2 : 9432921176 Package C3 : 31184452865 Package C6 : 2187632 Package C7 : 0 Package C8 : 0 Package C9 : 0 Package C10 : 0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881601 Title: Fan excessively runs, even when idle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881601/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs