Displaying issue on Jetson Orin Nano

Issue Overview

Users are experiencing a "Test Key is Used" error after flashing the Jetson Orin Nano with JetPack 5.0 using SDK Manager. The symptoms include:

• Upon booting, the NVIDIA logo appears, accompanied by the warning "WARNING: Test Key is used."
• Users can press ESC to access the boot manager, but when they attempt to exit or boot normally, the screen goes black with no signal.
• The issue occurs consistently after flashing and is not resolved by standard boot procedures.

The hardware involved includes the Jetson Orin Nano Dev Kit connected to a monitor via a DisplayPort (DP) to Digital Visual Interface (DVI) cable. The UEFI firmware version in use is r34.1-975eef6, built on April 6, 2022. The problem significantly impacts user experience by preventing access to the operating system and rendering the device unusable.

Possible Causes

Several potential causes for this issue have been identified:

• Hardware Incompatibility: If the DVI connection is analog rather than digital, it may lead to display configuration failures.

• Software Bugs: The use of an outdated version of JetPack or SDK Manager may contain bugs that affect booting.

• Configuration Errors: Incorrect settings during the flashing process could lead to improper system initialization.

• Driver Issues: Incompatibilities with NVIDIA drivers or missing drivers could prevent successful booting.

• Environmental Factors: Issues such as inadequate power supply or overheating could affect performance and stability.

• User Errors: Misconfigurations during setup or flashing could lead to these symptoms.

Each of these causes can contribute to the observed problem by interfering with the normal operation of the device or its ability to communicate with connected displays.

Troubleshooting Steps, Solutions & Fixes

To address this issue, follow these detailed troubleshooting steps:

1. Verify Monitor Connection:

   • Ensure that the monitor is set to the correct input source (DVI).
   • Confirm that you are using a digital DVI-D cable, as analog connections may not work properly.

2. Check for Firmware Updates:

   • Visit NVIDIA’s developer website to ensure you are using the latest UEFI firmware version for your Jetson Orin Nano.

3. Reflash JetPack:

   • Use SDK Manager to reflash JetPack 5.0. Ensure you select the most recent version available:
     • Download SDK Manager from NVIDIA’s official site.
     • Follow these steps:

       # Connect your Jetson device
       sdkmanager --flash
       

   • This will ensure that all necessary components are correctly installed.

4. Boot into Recovery Mode:

   • If issues persist, try booting into recovery mode:
     • Power off the device.
     • Hold down the recovery button while powering it on.
     • Connect to your host PC and use SDK Manager for recovery options.

5. Check Power Supply:

   • Ensure that your power supply meets the required specifications for the Jetson Orin Nano.

6. Review Logs for Errors:

   • Access logs for any errors that might indicate what went wrong during booting:

     dmesg | grep error
     

   • This command will help identify any hardware or driver-related issues.

7. Testing Different Configurations:

   • If possible, test with different monitors or cables to rule out display issues.
   • Try using HDMI instead of DVI if available.

8. Consult Documentation:

   • Refer to NVIDIA’s documentation for troubleshooting specific errors related to UEFI and JetPack installations:
     • NVIDIA Linux Tegra
     • JetPack Archive

9. Best Practices for Future Prevention:

   • Always flash using the latest versions of JetPack and SDK Manager.
   • Regularly check for firmware updates and apply them as needed.
   • Ensure proper connections and configurations before powering on devices.

By following these steps, users should be able to diagnose and potentially resolve the "Test Key is Used" error on their Jetson Orin Nano Dev board. If problems persist after trying these solutions, further investigation may be necessary, possibly involving direct support from NVIDIA forums or technical support teams.