USB device disconnection when the temperature is too high

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
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1

Hi,

I’m using a custom baseboard with jetson linux R36.3.
I found that when the temperature is too high, USB disconnection occurs, and even after the board’s temperature decreases, the device cannot be recognized. Only when the AGX is restarted can the device be recognized. Is this due to NVIDIA’s thermal protection mechanism, or is it another issue? Do you have any suggestions for troubleshooting and analysis?

Thanks

dmesg_usb.txt (98.9 KB)

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*** Please note that this reply is generated by LLM automatically ***

The issue you’re experiencing with your custom baseboard and Jetson AGX Orin module, where USB disconnection occurs at high temperatures and the device can’t be recognized even after the temperature decreases, could be related to NVIDIA’s thermal protection mechanism. However, it’s also possible that it’s another issue.

NVIDIA’s Jetson modules have a thermal protection mechanism that helps prevent damage to the module due to overheating. When the module’s temperature exceeds a certain threshold, it can throttle the CPU and GPU, reduce the voltage, or even shut down the module to prevent damage.

In your case, the USB disconnection could be caused by the thermal protection mechanism, but it’s also possible that it’s related to another issue, such as:

  1. Power management: The Jetson module’s power management system might be causing the USB disconnection. You can check the power management settings and ensure that the USB ports are not being powered down due to power saving features.
  2. USB PHY: The USB PHY (Physical Layer) might be malfunctioning due to high temperatures. You can check the USB PHY settings and ensure that they are configured correctly.
  3. Signal integrity: The high temperatures might be affecting the signal integrity of the USB signals, causing the disconnection. You can check the signal integrity of the USB signals using an oscilloscope or a signal analyzer.
  4. Hardware issue: There might be a hardware issue with the custom baseboard or the Jetson module itself. You can try using a different baseboard or module to see if the issue persists.

To troubleshoot and analyze the issue, you can try the following:

  1. Check the kernel logs: You can check the kernel logs (dmesg) to see if there are any error messages related to the USB disconnection.
  2. Monitor the temperature: You can monitor the temperature of the Jetson module using tools like tmon or sysfs to see if it’s exceeding the thermal threshold.
  3. Use a thermal camera: You can use a thermal camera to visualize the temperature distribution on the custom baseboard and identify any hotspots.
  4. Run stress tests: You can run stress tests on the Jetson module to see if the issue occurs under heavy load.
  5. Check the USB settings: You can check the USB settings on the Jetson module to ensure that they are configured correctly.

In comparison to other Jetson modules, the Jetson AGX Orin has a more advanced thermal protection mechanism, which might be contributing to the issue. However, it’s also possible that the issue is specific to your custom baseboard or the Jetson module itself.

To further troubleshoot the issue, you can try comparing the behavior of your custom baseboard with a standard Jetson AGX Orin developer kit to see if the issue occurs on both platforms. Additionally, you can try using a different Jetson module, such as the Jetson Xavier NX or Jetson Orin NX, to see if the issue persists.

In summary, the issue you’re experiencing with your custom baseboard and Jetson AGX Orin module could be related to NVIDIA’s thermal protection mechanism, but it’s also possible that it’s another issue. Further troubleshooting and analysis are needed to determine the root cause of the issue.

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4

Could you move this whole test to NV devkit and try again?

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There is no update from you for a period, assuming this is not an issue anymore.
Hence, we are closing this topic. If need further support, please open a new one.
Thanks ~1119

What is the temperature in use here?