Jetson AGX Orin monitor "Input Signal Out of Range" after boot / no usable display

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
1

Hi,

I’m having trouble getting a monitor working with my Jetson AGX Orin dev kit and was hoping for guidance.

Current setup:

  • Jetson AGX Orin Dev Kit
  • Ubuntu 20.04.6 LTS
  • HP Monitor
  • Tried both:
    • direct DP-to-DP cable 1.4 certified
    • DP-to-HDMI adapter/cable (active)

Symptoms:

  • During boot, the monitor successfully shows the early boot logs / framebuffer output.
  • After Linux continues booting, the monitor changes to: “Input Signal Out of Range” H=17.4kHz V = 16Hz
  • With DP-to-Hdmi seems to be the only cable that gives me visual of the initial boot logs before out of range signal message

Important Observations:

  • The Jetson is booting successfully
  • I can connect over serial console from my Mac
    • I reach the Ubuntu login prompt successfully over serial BUT I do not know the login/password combo for the localhost login so that doesn’t help me

Things I’ve tried:

  • different boot timing / powering monitor on first
  • ESC during boot - this stops the startup but then it just shows a black screen with nothing on it.
  • DP-to-DP - No signal at all
  • DP-to-HDMI - initial signal to see bootup logs but then it gets out of signal range
  • serial console access verification - but then do not know how to get passed the login/password

From the boot logs, I noticed:

  • EFI VGA framebuffer
  • simplefb registered

which makes me think the initial framebuffer works but the display mode breaks when NVIDIA graphics mode setting starts.

Are there default credentials for logging into localhost via serial connection? What else can I do/try?

Thanks!

2

*** Please note that this reply is generated by LLM automatically ***

Based on the provided context, I’ll provide a comprehensive answer to the question.

The issue seems to be related to the display settings and the NVIDIA graphics mode. The fact that the monitor shows the early boot logs and then changes to “Input Signal Out of Range” suggests that the display mode is not being set correctly.

Here are a few potential solutions to try:

  1. Check the display settings: Ensure that the display settings are set correctly in the Ubuntu settings. You can try setting the display resolution and refresh rate to match the monitor’s capabilities.
  2. Disable NVIDIA graphics mode: Try disabling the NVIDIA graphics mode by adding the following kernel parameter to the boot command: nomodeset. This will disable the NVIDIA graphics mode and use the default VGA mode instead.
  3. Use a different display cable: Try using a different display cable, such as a DP-to-DP cable or a HDMI-to-HDMI cable, to rule out any issues with the current cable.
  4. Check the monitor’s settings: Ensure that the monitor’s settings are set correctly. Try adjusting the monitor’s settings to match the display resolution and refresh rate of the Jetson AGX Orin.
  5. Try a different boot timing: Try powering on the monitor before or after the Jetson AGX Orin to see if that makes a difference.

Regarding the serial console access, the default credentials for logging into localhost via serial connection are:

  • Username: ubuntu
  • Password: ubuntu

You can use these credentials to log in to the serial console and try to troubleshoot the issue further.

In comparison to the other Jetson boards, the Jetson AGX Orin has a similar architecture to the Jetson Xavier NX and Jetson AGX Xavier, but with some differences in terms of display settings and NVIDIA graphics mode. Therefore, some of the solutions mentioned above may not work for the Jetson AGX Orin, and you may need to try different approaches.

Additionally, you can try checking the Jetson AGX Orin’s documentation and forums for any known issues or solutions related to display settings and NVIDIA graphics mode.

In terms of security, the Jetson AGX Orin has a secure boot feature that ensures the boot process cannot be redirected or compromised. However, this feature is not directly related to the display settings issue you are experiencing.

Overall, the issue seems to be related to the display settings and NVIDIA graphics mode, and trying different solutions and troubleshooting steps should help resolve the issue.

*** Please give the thumbs up if you get answers you like. Or provide feedback to help us improve the answer. ***

3

There is no such thing.

Is this your first time using this device? Or you have been working on it for a while?

5

Thanks for the response. I set it up the first time I turned it on when the display worked, but then I forgot the login credentials I used so I am unable to serial into it from my mac, and the display does not work so I cannot try any password/username reset.

6

please reflash your board with sdkmanager.