Jetson Xavier NX's fan not working and jtop says fan is disabled


I’m using Jetson Xavier NX.
But it’s fan is not working. jtop says its fan is DISABLED.
I tried to change files under /sys/devices/pwm-fan but they don’t exist.

I don’t know how to fix this issue.
Please help me.

hello sei23 ,

may I know which JetPack release you’re working with,
please check $ cat /etc/nv_tegra_release for confirmation.

Hello JerryChang

The result goes below.

R34 (release), REVISION: 1.0, GCID: 30102743, BOARD: t186ref, EABI: aarch64, DATE: Wed Apr 6 19:11:41 UTC 2022

Best regards,

hello sei23,

it should be JTop utility did not upgrade to support l4t-r34.1.
please try another tool, there’s userspace fan speed control daemon, nvfancontrol, it manages fan speed based on the trip point temperatures configured for the selected profile.

It worked!! Thanks.

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