Why can't set the fan speed in the manual Profiles in the version of 35.2.1?

[tianyi2]

Hi,
I enter the ctrl mode of jtop, and + or - the speed of the fan in the manual Profiles,but there is no action of the fan speed which is always about10599 RPM.Do you know the reason?

[KevinFFF]

Hi tianyi2,

Are you using the devkit or custom board for Xavier NX?

You could refer to the following thread to stop nvfancontrol service and conrtorl the fan speed through the node of pwm-fan.
Orin pwm-fan control - #7 by KevinFFF

[tianyi2]

Hi,
I’m using custom board for Xavier NX.I test the fan as you say, but the result is not as me expect.
The following is the test result and the fan speed is always 10000+RPM.I want to adjust the speed, and how to solve the problem?
echo 0 > /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1

echo 25 > /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1

echo 50 > /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1

echo 100 > /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1

Thanks

[KevinFFF]

Do you stop nvfancontrol service before controlling the fan speed?
Please share the result of the following command

$ systemctl status nvfancontrol

Does you fan would stop if you write 0 to this node?

echo 0 > /sys/devices/platform/pwm-fan/hwmon/hwmon4/pwm1