I installed thinkfan too, no change. I tried $ systemctl status thinkfan.service
and got: ● thinkfan.service - simple and lightweight fan control program Loaded: loaded (/lib/systemd/system/thinkfan.service; disabled; vendor preset: enabled) Active: inactive (dead) so I restarted the service then checked the status and got: ● thinkfan.service - simple and lightweight fan control program Loaded: loaded (/lib/systemd/system/thinkfan.service; disabled; vendor preset: enabled) Active: failed (Result: exit-code) since Fri 2020-04-03 20:37:52 NZDT; 3s ago Process: 6662 ExecStart=/usr/sbin/thinkfan $DAEMON_ARGS (code=exited, status=4) Apr 03 20:37:52 darwin systemd[1]: thinkfan.service: Control process exited, code=exited status=4 Apr 03 20:37:52 darwin thinkfan[6662]: WARNING: Using default temperature inputs in /proc/acpi/ibm/thermal. Apr 03 20:37:52 darwin systemd[1]: thinkfan.service: Failed with result 'exit-code'. Apr 03 20:37:52 darwin thinkfan[6662]: /proc/acpi/ibm/thermal: No such file or directory Apr 03 20:37:52 darwin thinkfan[6662]: add_sensor: Error getting temperature. Apr 03 20:37:52 darwin thinkfan[6662]: /proc/acpi/ibm/thermal: No such file or directory Apr 03 20:37:52 darwin thinkfan[6662]: Error parsing temperatures: Apr 03 20:37:52 darwin thinkfan[6662]: readconfig: Error getting temperature. Apr 03 20:37:52 darwin systemd[1]: Failed to start simple and lightweight fan control program. Apr 03 20:37:52 darwin thinkfan[6662]: Refusing to run without usable config file! Looking in /proc/acpi/ibm/ , there is no "thermal" node. ubuntu 18.04.4, thinkpad t420 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/787031 Title: installing thinkfan package does not make thinkfan usable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thinkfan/+bug/787031/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs