Jetson Orin Nano Dev Kit Flashing Issues

Issue Overview

The discussion revolves around problems encountered while flashing the Nvidia Jetson Orin Nano Developer Kit, specifically when using the nv_build_samplefs.sh tool to generate a root filesystem (rootfs). Users report successful flashing with the pre-packaged rootfs from jetson-linux-r363 1, but encounter failures when attempting to use a self-generated rootfs. The errors include:

• Failed to decompress APP image into /dev/nvme0n1p1.
• Messages indicating issues with mounting the NFS server or flash command failures.

The users involved have specified their environment, including the use of Ubuntu 20.04 and JetPack 6.0.0 Rev 2, and noted that their NFS server is active and not blocked by firewalls. The issue appears to occur consistently during the flashing process, severely impacting user experience by preventing successful setup of the development environment.

Possible Causes

1. Unsupported Tool: The nv_build_samplefs.sh tool may not be fully supported or compatible with the current version of JetPack being used.

   • This could lead to incompatibilities in the generated rootfs, causing decompression errors during flashing.

2. Missing Executable: The use of zstd for compressing system images may not be reflected in the sample rootfs package list.

   • Users reported that only the library for zstd is included in the basic flavor, while the executable itself is missing, leading to failures when attempting to decompress images.

3. Configuration Errors: Incorrect configurations in the flashing commands or parameters can result in failure.

   • Misconfigurations may include incorrect device paths or options that do not align with the hardware setup.

4. Driver Issues: Potential issues with USB drivers or other dependencies required for flashing.

   • Users have noted that using a USB 2.0 hub resolved some timeout issues during flashing.

5. Environmental Factors: Factors such as power supply stability, temperature, and network configurations can affect the flashing process.

   • Users should ensure that their hardware setup is optimal for flashing operations.

6. User Errors: Misunderstanding of command syntax or incorrect execution order can lead to failures.

   • Users must follow instructions carefully and ensure all prerequisites are met.

Troubleshooting Steps, Solutions & Fixes

1. Verify Environment Setup:

   • Ensure that all necessary packages are installed on the host machine:

     sudo apt-get update
     sudo apt-get install -y sshpass abootimg nfs-kernel-server libxml2-utils binutils qemu-user-static python
     

2. Check NFS Configuration:

   • Confirm that NFS is properly configured and running without firewall interference:

     sudo systemctl status nfs-kernel-server
     

3. Use Supported Root Filesystem:

   • If issues persist with a self-generated rootfs, revert to using the pre-packaged rootfs from jetson-linux-r363 1.

4. Modify Flash Commands:

   • Ensure correct syntax in flash commands:

     sudo ./tools/kernel_flash/l4t_initrd_flash.sh --external-device nvme0n1p1 -c tools/kernel_flash/flash_l4t_t234_nvme_rootfs_ab.xml --showlogs --network usb0 jetson-orin-nano-devkit internal
     

5. Include Missing Executables:

   • If using a self-generated rootfs, add zstd to your package list before building:

     echo "zstd" >> Linux_for_Tegra/tools/samplefs/nvubuntu-jammy-basic-aarch64-packages
     

6. Testing Different Hardware Configurations:

   • If issues continue, try using different USB cables or ports, or test on another host computer to isolate potential hardware faults.

7. Power Cycle After Failures:

   • If flashing fails after using SDK Manager, recycle power before attempting a new flash command.

8. Monitor Logs for Errors:

   • Keep an eye on logs during flashing for specific error messages that can guide troubleshooting efforts.

9. Recommended Workaround:

   • Some users found success by placing a USB 2.0 hub between their computer and the Jetson board during installation; this may help mitigate USB communication issues.

10. Documentation and Updates:

    • Regularly check Nvidia’s official documentation for updates regarding JetPack and related tools that may address known issues.

By following these steps and recommendations, users can troubleshoot and resolve common issues related to flashing the Nvidia Jetson Orin Nano Developer Kit effectively.