**Nvp Model Service Crashes After Installing Jetpack 6.0 Rev1 on Orin Nano 8GB Developer Kit**

Issue Overview

Users have reported that after flashing the Jetson Orin Nano with Jetpack 6.0 Rev1, the nvpmodel service fails to start during boot, resulting in system errors. The issue manifests as a segmentation fault in the nvpmodel.sh script, leading to the failure of several services, including nvpmodel itself.

Symptoms and Context

• Error Messages: The service fails with a status code indicating an exit due to a segmentation fault.
• Flashing Process: The board was flashed using the SDK Manager while in recovery mode.
• Hardware Specifications:
  • Jetson Orin Nano 8GB Developer Kit
  • NVMe Drives: Samsung SSD 970 EVO Plus (2TB) and Samsung SSD 990 Pro (1TB)
• Software Specifications:
  • Ubuntu 22.04.4 LTS
  • L4T version: 36.3.0
  • Kernel Version: 5.15.136-tegra
• Frequency of Occurrence: The issue is consistently reproducible when using Jetpack 6.0 Rev1 or Rev2 without the full SDK components.

Impact on User Experience

The failure of the nvpmodel service significantly hampers the functionality of the Jetson Orin Nano, affecting users’ ability to utilize power management features and potentially leading to broader system instability.

Possible Causes

• Software Bugs: The issue appears to be linked to Jetpack 6.0, particularly related to the nvpmodel service.

• Configuration Errors: Incorrect configurations in the nvpmodel settings may lead to service failures.

• Driver Issues: Incompatibility or bugs in driver versions included with Jetpack 6.0 could cause segmentation faults.

• Environmental Factors: Power supply issues or overheating could exacerbate software problems, although they are not directly indicated in this case.

• User Errors: Flashing without installing necessary SDK components leads to consistent failures.

Troubleshooting Steps, Solutions & Fixes

Step-by-Step Instructions for Diagnosing the Problem

1. Check Service Status:
   Run the following command to check the status of the nvpmodel service:

   systemctl status nvpmodel.service
   

2. Review System Logs:
   Examine logs for any error messages related to nvpmodel:

   dmesg | grep nvpmodel
   

3. Inspect Configuration Files:
   Check relevant configuration files for any anomalies:

   cat /etc/nv_boot_control.conf
   cat /etc/nv_tegra_release
   

Isolating the Issue

• Test with different configurations:
  • Flash with only runtime components and verify if nvpmodel fails.
  • Flash with all SDK components checked and verify if nvpmodel starts successfully.

Potential Fixes

• Revert to Previous Version: If issues persist, rolling back to Jetpack 5.1.3 resolves the problem.

• Install Full SDK Components: Ensure that all SDK components are installed during flashing, as this has been shown to resolve the issue for some users.

• Upgrade Jetpack Version: If available, consider upgrading to a newer version of Jetpack that may contain fixes for this issue.

Recommended Approach

Based on user feedback, flashing with all SDK components is a recommended approach as it consistently allows nvpmodel to function correctly.

Documentation and Resources

For further assistance, refer to:

• NVIDIA’s official documentation on flashing Jetson devices.
• Community forums for updates on similar issues.

Best Practices for Prevention

• Always check for updates or patches related to Jetpack before flashing.

• Ensure complete installation of necessary SDK components during setup.

Unresolved Aspects

Further investigation is needed regarding:

• The specific cause of segmentation faults in nvpmodel.sh.
• Whether this issue is isolated to specific hardware versions or configurations.