Jtop doesn't detect GPU temperature consistently

Hello, I’m attempting to read the temperature of the GPU in the Orin AGX developer kit using jtop. However, when connecting to the machine over SSH, the temperature of the GPU sometimes reads an actual temperature, but sometimes will say OFFLINE. Why would this be occurring?

Hi, I think this topic will be better suited for the Jetson category. I will move it over for you.

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Hi,
The latest release is Jetpack 5.1.2. If you use previous release, please upgrade and give it a try.

If the issue is present on Jetpack 5.1.2, please run sudo tegrastats and check if you observe the issue. The information in jtop is from tegrastats

I connected over SSH to a devkit that is running 5.1.2, and it shows this:

test@ubuntu:~$ sudo tegrastats
08-22-2023 09:31:50 RAM 7177/30593MB (lfb 4296x4MB) SWAP 0/15296MB (cached 0MB) CPU [1%@729,0%@729,0%@729,1%@729,6%@806,4%@729,4%@729,2%@729,off,off,off,off] EMC_FREQ 0%@665 GR3D_FREQ 0%@[0,0] VIC_FREQ 115 APE 174 CV0@-256C CPU@41.156C Tboard@29C SOC2@37.843C Tdiode@30.25C SOC0@38.187C CV1@-256C GPU@-256C tj@40.875C SOC1@37.843C CV2@-256C VDD_GPU_SOC 1587mW/1587mW VDD_CPU_CV 396mW/396mW VIN_SYS_5V0 2629mW/2629mW NC 0mW/0mW VDDQ_VDD2_1V8AO 303mW/303mW NC 0mW/0mW

Note this: GPU@-256C. The GPU temperature here is not being filled correctly.

Hi,
Please check
Jetson AGX Orin FAQ

Q: Why thermal zone/tegrastats reports -256C?

If the engine is not in-use, it is power gated and there is no thermal information.

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