Orin Nano DisplayPort Issue

Robotics & Edge Computing Jetson Systems Jetson Orin Nano
1

Hi,

We are currently developing a medical diagnostic product that makes use of an Nvidia Jetson Orin Nano module. We are attempting to interface it with the following dual LCD display module: 120Hz 2.9 inch 2880*1440 2k Dual Square LCD Displays For VR Headset HMD Panel DP MIPI Driver Board – wisecoco . Our initial development is being done with the following development kit from Seeed Studio: https://www.seeedstudio.com/NVIDIAr-Jetson-Orintm-Nano-Developer-Kit-p-5617.html . Connection from the dev kit to the display is via a DisplayPort cable. The SoM has been set up according to the “Quick Start Guide” at Quick Start — NVIDIA Jetson Linux Developer Guide

On powering on the system, the status LED on the display driver board turns on (indicating that it is receiving some sort of signal), and the backlights illuminate, but the display remains black - not even the Nvidia boot library is displayed.

We have confirmed that the DisplayPort output functions with an alternative monitor, and we have also verified the Wisecoco display with an alternative DisplayPort Source. The SoM is known to be booting in the fault condition, as we are able to SSH into it.

We have discovered that a Jetson Orin NX SoM in an identical configuration produces a functioning display. Can anyone comment on what differences there are in the Orin Nano and Orin NX DisplayPort outputs that could produce this discrepancy?

4

Orin Nano does not support 4k@60. It means not just only 4k@60 mode but also other resolution that requires equal or higher to this pclk would not work.

5

Hi Wayne,

Thanks for your prompt response on this. Is there any way of configuring the SoM to output a downsampled/lower resolution, or is our only option to use a lower resolution display?

A lower refresh rate would also be acceptable for our application.

6

If the monitor provides a EDID that has lower mode, then our driver would use that immediately.

Please check the xrandr result from your terminal through ssh or uart first. Check if there is any other modes there.

7

Thanks, we will follow this up with the display manufacturer.