Display Detection Issue on Jetson Orin Nano After Reboot

Issue Overview

The Jetson Orin Nano development board, running JetPack version 6.0-b52, is experiencing a display detection problem after a recent reboot. The user reports that the system was functioning normally before the reboot, but now only shows the "boot options" screen before the display reports no video signal. Despite the display issue, the device remains accessible via SSH.

Key points:

• The problem occurred after a recent reboot
• The system shows the "boot options" screen but then loses video signal
• SSH access to the device is still possible
• The issue persists across multiple reboots

Possible Causes

1. Software Configuration Issues: The sudden change after a reboot suggests a potential problem with software configurations or drivers related to display output.

2. Xorg Server Malfunction: The Xorg log indicates that the X server starts up but shuts down immediately, pointing to a possible issue with the X Window System configuration or permissions.

3. Driver Conflicts: The presence of NVIDIA modules in the system suggests that there could be conflicts or misconfigurations in the graphics drivers.

4. Hardware Connection Problems: Although less likely given the symptoms, there’s a possibility of a loose or faulty connection between the board and the display.

5. Corrupted System Files: The abrupt change in behavior might be due to corrupted system files affecting the display subsystem.

Troubleshooting Steps, Solutions & Fixes

1. Verify Hardware Connections

   • Ensure all cables connecting the Jetson Orin Nano to the display are securely attached.
   • Try using a different HDMI cable or port if available.

2. Check Xorg Configuration

   • Examine the Xorg configuration file:

     cat /etc/X11/xorg.conf
     

   • Look for any recent changes or misconfigurations.

3. Manually Start X Server

   • Attempt to start the X server manually:

     startx
     

   • Review any error messages for clues about the issue.

4. Investigate Xorg Logs

   • Analyze the Xorg log file for detailed error information:

     cat /var/log/Xorg.0.log
     

5. Check NVIDIA Driver Status

   • Verify the status of NVIDIA drivers:

     lsmod | grep nvidia
     

   • Ensure all necessary modules are loaded.

6. Update System Packages

   • Update and upgrade system packages:

     sudo apt update
     sudo apt upgrade
     

7. Reconfigure Xorg

   • Reconfigure the Xorg server:

     sudo dpkg-reconfigure xserver-xorg
     

8. Restore Default Configuration

   • If a backup of the original configuration exists, restore it:

     sudo cp /etc/X11/xorg.conf.backup /etc/X11/xorg.conf
     

9. Re-flash the System Image

   • As a last resort, re-flash the system using the SD card method:
     • Download the JetPack 6 SD card image from the NVIDIA developer website.
     • Follow the flashing instructions provided by NVIDIA.
   • This method is faster than a full re-flash and preserves pre-installed components like CUDA, CUDA toolkit, and DeepStream.

10. Post-flash Configuration

    • After re-flashing, reconfigure any custom settings that were lost during the process.
    • Update to the latest packages and drivers specific to your setup.

11. Monitor System Logs

    • After applying fixes, monitor system logs for any recurring issues:

      sudo journalctl -f
      

If the issue persists after trying these solutions, consider reaching out to NVIDIA support or the Jetson community forums for more specialized assistance. The problem may require more in-depth diagnostics or potentially indicate a hardware issue.