This page mainly introduces Cooling Fan. The first half describes how to control the Cooling Fan on Ubuntu, and the second half describes how to control the Cooling Fan on Android.

The following method is recommended if you are using desktop OS. Find Fan Setting from the applications list. Open the app to control the cooling fan speed.

You can also use command to control the FAN from terminal.

fan.sh off
fan.sh on
fan.sh auto

fan.sh mode

fan.sh high
fan.sh mid
fan.sh low

fan.sh temp

You can get the trigger temperature from the nodes below:

• low - /sys/class/fan/trigger_temp_low
• mid - /sys/class/fan/trigger_temp_mid
• high - /sys/class/fan/trigger_temp_high

e.g. Get the low trigger temperature:

cat /sys/class/fan/trigger_temp_low 

You can setup the trigger temperature from the nodes below:

• low - /sys/class/fan/trigger_temp_low
• mid - /sys/class/fan/trigger_temp_mid
• high - /sys/class/fan/trigger_temp_high

e.g. Setup the low trigger temperature to 40 Celsius.

echo 40 | sudo tee /sys/class/fan/trigger_temp_low 

Just goto the system setting to control the FAN.