How to Enter Sleep and Wake Up on Jetson Orin Nano Devkit

Issue Overview

Users are experiencing difficulties with entering sleep mode and waking up the Jetson Orin Nano Devkit. The symptoms include uncertainty about the correct commands to use for sleep and wake functions, especially when using a custom board. The issue typically arises during setup or testing phases, particularly when users attempt to implement sleep/wake functionality via buttons. Users have reported varying experiences with the power button’s effectiveness in waking the device, with some needing to press it multiple times. The Jetpack version in use may also influence the behavior of these functions. The impact of this issue can significantly hinder user experience, as it affects the ability to manage power effectively on the device.

Possible Causes

  • Hardware Incompatibilities or Defects: Custom hardware designs may not align with expected configurations, leading to unexpected behavior.
  • Software Bugs or Conflicts: Specific versions of Jetpack may have bugs affecting sleep/wake functionalities.
  • Configuration Errors: Incorrect settings in the system configuration can prevent proper sleep/wake operations.
  • Driver Issues: Outdated or incompatible drivers may interfere with power management features.
  • Environmental Factors: Power supply inconsistencies or temperature extremes could impact device performance.
  • User Errors or Misconfigurations: Incorrect command usage or misunderstandings of the device’s capabilities may lead to issues.

Troubleshooting Steps, Solutions & Fixes

  1. Verify Jetpack Version:

    • Check the Jetpack version in use using:
      dpkg -l | grep jetpack
      
    • Ensure you are using a stable version known for compatibility with sleep/wake functions.
  2. Entering Sleep Mode:

    • To enter sleep mode, run:
      sudo systemctl suspend
      
    • Alternatively, for a more direct method:
      sudo bash -c "echo mem > /sys/power/state"
      
  3. Waking Up the Device:

    • Press the power button to wake up the device.
    • As an alternative, shorting PWR/GND can also wake the device.
  4. Testing Different Methods:

    • If waking via the power button fails initially, try pressing it again as some users have reported needing multiple presses.
  5. Logging System Messages:

    • To gather information about power state changes, use:
      sudo dmesg | grep -i 'suspend\|power\|button\|sleep\|wake'
      
    • This can help diagnose if the system is receiving the correct signals upon wake attempts.
  6. Driver and Firmware Updates:

    • Ensure all drivers are up-to-date by checking for updates through NVIDIA’s official resources.
    • Consider updating firmware if applicable.
  7. Testing with Different Configurations:

    • If issues persist, test with a different power supply or configuration to isolate potential hardware issues.
  8. Best Practices for Future Use:

    • Regularly check for updates to Jetpack and related drivers.
    • Document any custom configurations made to ensure they can be replicated or reverted if issues arise.
  9. Further Investigation:

    • If problems remain unresolved, consider reaching out to NVIDIA support forums for additional assistance or insights from other users who may have faced similar challenges.

By following these troubleshooting steps and solutions, users should be able to effectively manage sleep and wake functionalities on their Jetson Orin Nano Devkit.

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