Display second screen using mmapi ex. 8

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
1

I am trying to display second display using mmapi example 08 using without video

How do i do that?

3

Hi,
Would like to get more information, do you use Jetson Nano developer kit with Jetpack 4.6.6(r32.7.6)?

4

We use orin agx with customized carrier board fron Connectec that have two displays

7

Hi Eamo,

Currently, our mmapi example 8 does not support rendering to dual displays simultaneously. However, you can use modetest to render on two displays at the same time. Please see the example below:

modetest -M nvidia-drm -s 74:#0@XB24 -s 71:#0@XB24 -P 39@46:1920x1080 -P 52@59:1920x1080

I have a few questions to confirm your setup:

  • Do you want to display content on both screens simultaneously, or just render to the second display?
  • Could you share the command you used and the corresponding fail log?
  • Just to confirm again, are you using mmapi example 8 or gstreamer?

Thanks,
David

8

We want to display 2 diffrent frames on 2 diffrent screens

We run the example with flag –disable-video and it run on first display

BUT the same flag not working on second display using flag -crtc 1

How to display using mmapi ex. 8 on second display?

9

Hi,

The mmapi example 8 is currently not supported.
We will provide a patch once it is completed.

Thank you for your understanding.

10

Do you support drm atomic api?

jetpack version is 6.1

11

HI,

Yes.

Please run below commands to enable

sudo modprobe nvidia-drm modeset=1

Thanks

12

Can you tell me if the ex. 8 upadted?

13

Hi,

Yes.
We will provide a patch once it is completed.

Thanks