After mistakenly changing the power option in UEFI to ACPI, the HDMI monitor did not display. How to restore UEFI default values from hardware?
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To restore the UEFI default values from hardware on the Jetson Orin Nano, you can follow these steps:
- Reboot the system: Restart the Jetson Orin Nano and enter the UEFI menu by pressing the ESC key when prompted.
- Reset UEFI settings: In the UEFI menu, navigate to the “Boot” or “Advanced” tab and look for an option to reset the UEFI settings to their default values. This option is usually labeled as “Reset to Default” or “Load Optimized Defaults.”
- Save changes: Save the changes and exit the UEFI menu. The system will reboot with the default UEFI settings.
Alternatively, if you are unable to access the UEFI menu, you can try the following:
- Force Recovery Mode: Place the Jetson Orin Nano in Force Recovery Mode by pressing and holding the Recovery button (usually located on the top of the module) while powering on the system.
- Reflash the device: Reflash the device using the
sudo ./tools/kernel_flash/l4t_initrd_flash.shcommand, as described in the “Flashing PCIe as Endpoint on a Jetson Orin NX/Nano Series System” section. This will restore the default UEFI settings.
Comparison with other Jetson modules:
The process of restoring UEFI default values is similar across different Jetson modules, including the Jetson Orin NX and Jetson AGX Orin. However, the specific steps and options may vary depending on the module and its configuration.
Important notes:
- Before making any changes to the UEFI settings, ensure that you have backed up any important data and configurations.
- If you are unsure about the UEFI settings or the flashing process, it is recommended to consult the official NVIDIA documentation or seek assistance from a qualified technician.
In your case, since you mistakenly changed the power option in UEFI to ACPI, you may need to reset the UEFI settings to their default values to restore the HDMI display. Follow the steps outlined above to reset the UEFI settings and see if it resolves the issue.
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