Template:RK3399 Linux PWMFan

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Revision as of 09:53, 15 May 2019 by Tzs (Talk | contribs) (updated by API)

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Fan speed setting

The fan uses PWM to automatically adjust the speed. It determines the fan switch and the fan speed according to the current CPU temperature. If the current CPU temperature is not high, the fan will be turned off or rotated at a lower speed (reducing unnecessary environmental noise). ), if you want to change the speed regulation behavior of the fan, please modify the following file:

/usr/bin/start-rk3399-pwm-fan.sh

Need to cancel the boot automatically start the fan (such as you need to connect the other PWM device), please enter the following command:

systemctl stop pwm-fan
systemctl disable pwm-fan

Or delete the two files below:

/etc/systemd/system/pwm-fan.service
/etc/systemd/system/multi-user.target.wants/pwm-fan.service