A simple script that switches the fan to disengaged mode at high CPU temperatures, which helps lower the temperature of the CPU.
This works because the fan in disengaged mode spins faster than in adaptive mode with maximal speed level.
Tested on Lenovo Thinkpad x220, but may work on others.
$ git clone https://github.com/mirai65536/thinkpad-fan-tweak
$ cd thinkpad-fan-tweak
$ mkdir build
$ cd build
$ cmake ..
$ make
$ sudo make install
After installation you should reload a systemd configuration with this command, or restart:
$ sudo systemctl daemon-reload
Then you can run the script with this command:
$ sudo systemctl start thinkpad-fan-tweak
And stop with this:
$ sudo systemctl stop thinkpad-fan-tweak
To run script with system start:
$ sudo systemctl enable thinkpad-fan-tweak
You can configure the script by creating file /etc/thinkpad-fan-tweak, format is:
hightemp=80
interval=5
Where:
hightemp is temperature, at which fan switches to disengaged mode.
interval is interval of checking CPU temperature in seconds.
Default values are 80 and 5 respectively.