Fan always on

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

We’re experiencing a problem with one of our Jetson Xavier devices.
The fan turns ON during booting and stays turned ON indefinitely.

When calling ‘jetson_clocks.sh --show’ after booting the fan speed is shown as 0:
$ sudo ./jetson_clocks.sh --show
Fan: speed=0
However the fan is turned ON.

After calling (without “–show”)
$ sudo ./jetson_clocks.sh
the fan turns OFF and the fan speed is shown as 255.

The default power mode was:
$ nvpmodel -q
NV Power Mode: MODE_15W
2

The behavior is the same if another power mode is chosen (e.g. 0).
All of the Xaviers have been flashed using the JetPack-L4T-4.1.1-linux-x64_b57.run Installer.

This particular XAVIER also has issues with the PCI Interface → :
[url]https://devtalk.nvidia.com/default/topic/1046489/jetson-agx-xavier/pcie-can-interfaces-not-recognized-/[/url]

Any suggestions? Right now we think it may be an hardware issue on the XAVIER

2

Hi Markstein,

If that’s the board issue, please go through RMA process:

[url]https://developer.nvidia.com/embedded/faq#rma-process[/url]

Thanks

3

This sounds more like a hardware issue.

How about running app? Would high temperature trigger fan to run or stop?

4

for my case, cooling pan does not work from the beginning of xavier booting.
I’ve never seen the pan working.
But after “sudo ./jetson_clocks.sh”, it works. any reason for this?

5

rooney.sm.yang,

The fan should run if the weighted average of 3 thermal zone >50C.

Please share the result of below nodes.

https://devtalk.nvidia.com/default/topic/1047567/jetson-agx-xavier/xavier-not-turning-on-fan-when-cpu-heats-up-has-to-be-turned-on-via-software/post/5316598/#5316598

6

I got 28000 for GPU and 28500 for CPU.

7

Dear WayneWWW.

I saw that the fan ran when > 50C using “~/tegrastats”.

8

I doubt if this issue is related. Could you check it on your side?

https://devtalk.nvidia.com/default/topic/1048433/jetson-agx-xavier/pcie-and-fan-issue/