Dual Monitor Support

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

I have been able to get the dual monitor feature to work with my adapter, but the Nano will not recognize my primary display as 4k. It recognizes both of my displays as 2560x1440. I have tried connecting the monitor directly to the Nano and it still shows up as 2560x1440. Any idea why this would happen?

In case it matters, the adapter is this one Amazon.com: Woieyeks 4K@60Hz Displayport to Dual Displayport Splitter Adapter for Dual Monitors,SST/MST DP hub 1 in 2 Out for Desktop, Laptop,Extend Display : Electronics

3

Hi,

Is your monitor a 4k@60 one? Orin Nano cannot output 4k@60 but only 4k@30.

4

It is actually over 60hz, but shouldn’t it still show up as 4K 30hz? Do I need to create a manual profile for it?

5

Just to validate if 4k@30 on that monitor is fine first.

After it gave you 2560x1440, will it work again if you set it to 4k@30 manually?

6

It should, but I don’t know how to set it to that.

7

You could use the easiest method first. Do you have Ubuntu GUI shown?

8

Yes, it currently boots into the GUI.

9

Then use ubuntu gui to configure the display setting.

10

I would do that, but it doesn’t show 4k 30hz as an option. It only lists 2560x1440.

11

Then 4k@30 does not support here.

If you want to know the reason, then we need to enable more logs in xorg and it will tell.

Actually it is a little weird that only one mode is on the list.

What would happen if you direct connect the monitor to the port but not through the adapter? Will you see more modes?

12

I tried to do that and it didn’t show up as an option. Could I manually enable that mode and select it?

13

Hi,

There is no method to do that. The reason it cannot show up could be

  • there is actually no 4k@30 mode on this monitor
  • Even it has 4k@30, the format is not supported by Orin Nano.

If you want to check why 4k@30 is not present in the list, please add below to your Xorg conf and then reboot machine to dump Xorg log again. It will enable more logs in xorg log and tell us why modes are gone.

#Add below option in /etc/X11/xorg.conf, 'Section "Device"'. Verbose mode logging will be shown in /var/log/Xorg.0.log
Section "Device"
...
  Option   "ModeDebug"
...
EndSection
15

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