Configuration and setup ThinkFan on Lenovo T14

Add permissions

sudo chmod 666 /proc/acpi/ibm/fan

sudo chmod +r /sys/devices/platform/coretemp.0/hwmon/hwmon*/temp*_input

Find all sensors on your device:

find /sys/devices/platform/coretemp.0/hwmon/hwmon*/temp*_input

Create symlinks for your core temp sensors, because hwmon* - changes dynamically every time the OS boots, for example:

sudo ln -s /sys/devices/platform/coretemp.0/hwmon/hwmon*/temp1_input /opt/sensors/cpu/temp1_input

sudo ln -s /sys/devices/platform/coretemp.0/hwmon/hwmon*/temp2_input /opt/sensors/cpu/temp2_input

sudo ln -s /sys/devices/platform/coretemp.0/hwmon/hwmon*/temp3_input /opt/sensors/cpu/temp3_input

Edit config file /etc/thinkfan.conf

Thinkfan configuration

tp_fan /proc/acpi/ibm/fan

hwmon /opt/sensors/cpu/temp1_input

hwmon /opt/sensors/cpu/temp2_input

hwmon /opt/sensors/cpu/temp3_input

(0, 0, 40)

(1, 40, 44)

(2, 44, 48)

(3, 48, 52)

(4, 52, 56)

(5, 56, 60)

(6, 60, 64)

(7, 64, 68)

(127, 68, 32767)

Restart and check

sudo systemctl restart thinkfan

sudo systemctl status thinkfan