Multiple Display config on Jetson Orin Nano

Robotics & Edge Computing Jetson & Embedded Systems Jetson Orin Nano
1

Hi, I am developing an embedded system with the Jetson Orin Nano board. As a display, I am currently working with a Waveshare 5.5" AMOLED display, which only has an HDMI input. The resolution is 1920x1080, 60 Hz. I can get the display to show properly in single-display mode connected to the DisplayPort out of the Jetson via a DisplayPort to HDMI adapter. I would also like to have the option of using an external monitor with a cloned screen. As an external monitor, I have a Viewsonic VX4381-4K, also set to 1920x1080, 60 Hz. I am using the NVIDIA carrier board.

I have tried the following configuration:
Jetson Orin Nano DisplayPort Out to ViewSonic VX4831-4K DisplayPort In, then ViewSonic VX4381-4K DisplayPort Out to DisplayPort to HDMI converter cable to HDMI In on the Waveshare screen.

The ViewSonic displays properly but on the Waveshare screen which is the secondary screen in the chain I am getting a garbled image where the very top of the image in portrait orientation is clean, but about the top third is garbled and the bottom two thirds or so is blank. That’s if I get an image at all. Often I will get a flashing light indicating no signal.

I have tried two different DisplayPort to HDMI converter cables.

I have yet to see smaller screens on the market that may have a DisplayPort In cable - most have HMDI or occasionally USB-C. What advice do you have for getting this dual display scenario working? I am trying the daisy-chain MST approach which seems to be what the forums suggest. I’m sure there may be advice to ditch the HMDI and keep it all DisplayPort but like I said, I’m not seeing a product in that size on the market.

I am also considering trying a DisplayPort to dual HDMI adapter hub and seeing if I get any different behavior going that route rather than through the DisplayPort out of the Viewsonic monitor.

Thank you,
Mike

3

Hi,

The only official way to support dual monitor is through MST hub on DP.

4

Yes, I understand it needs to use MST. Are you saying that it cannot have an HDMI anywhere in the path (e.g. no use of DisplayPort to HDMI converter), which which appear to preclude to the use of small screens in dual display as there are not screens with DisplayPort input in small form factor on the market? Or are you saying that it needs a MST hub rather than using the DisplayPort out of the ViewSonic monitor and use the DisplayPort to HDMI adapter. What I am not understanding is if the output of the Displayport is good going into the hub, why it would not be ok coming out of HDMI from a Displayport to HDMI adapter?

Thank you,
Mike

5

Is this situation reproduced on NV devkit or a custom board? Is the adapter an active one or not?

6

Hi, I am using the Jetson Orin Nano developer kit which uses the NVIDIA carrier board.

I have tried a StarTech adapter which is an active converter. Some info below from the product listing. I also tried a XiAyriky DisplayPort to HDMI cable. That one does not list Active in the product description so I assume it is not active. Info on that follows the info on the StarTech adapter.

StarTech.com DisplayPort to HDMI Adapter - 4K 60Hz Active DP 1.4 to HDMI 2.0 Video Converter - DP to HDMI Monitor/TV/Display Cable Adapter Dongle - Latching DP Connector (DP2HD4K60S), Black

  • HOST COMPATIBILITY: Active DisplayPort to HDMI adapter supports DP/DP++ source including workstations, desktops (AMD Radeon Pro Workstation Graphics, Nvidia RTX/Quadro), small form factor computers & docking stations | Tested w/ HDMI cables up to 23’
  • CONNECT TO A PRIMARY OR SECONDARY DISPLAY: Connect an HDMI monitor, TV or projector, or add a second display to your workstation; Small form factor design makes it easy to carry around between home office and office
  • LATCHING DISPLAYPORT CONNECTOR: DP to HDMI adapter dongle has latching DP connector to ensure solid host connection | Features Electromagnetic Interference (EMI) shielding to protect from line noise/distortion
  • EASY TO USE: With no software or drivers required, the DisplayPort to HDMI video converter works with any OS including macOS, Windows & Ubuntu; DP Male to HDMI Female

I also tried:

XiAyriky DisplayPort to HDMI Cable 4K 1.5 Feet, Short DP (Display Port) to HDMI Cable Adapter Cord Male to Male for Computer, Monitor, TV, Projector

  • 【UHD 4K Video and Audio】Supports smooth, vivid and crisp High-quality 3D, 4K (3840x2160, Ultra HD), 1440p (2560x1440, QHD), 1080P(1920x1080, Full HD) video and audio.
  • 【Easy to Carry】We have specially designed this short displayort to hdmi cable, which is convenient for short distance video and audio transmission, making the desktop more organized and beautiful, and easy to carry and store
  • 【Wide Compatibility】This 4K dp to hdmi cable is compatible with desktop PC, laptop, GPU (AMD, NVIDIA) and other devices with a DisplayPort. Connect to TV, projector, monitor, VR headset, etc
  • 【Stable Connection】24K Gold-plated port,Solid bare copper conductors,foil & braid double-layer shielding combine together and Gold-plated connectors to provide both superior cable performance and reliable connectivity
  • 【Long Life】Twice Forming Die Casting and fabric braided nylon cable provides you with a heavy-duty Display Port to DisplayPort Cable and effectively prevents cracking. Slim shell size frees you from the worry of getting in the way of nearby ports.
  • 【NOTE】This is not a bidirectional cable. Only convet signal from DisplayPort to HDMI

Thanks,
Mike