Setting up the Jetson for DRMSINK output

Nvidia guide for this operation for L4T_R36.2 can be found here

Summary:

1. Stop the display manager

sudo systemctl stop gdm

To disable the displaymanager (this will presisit until it is turned back on)

sudo systemctl disable  display-manager

1. Terminate the current session (if needed)

   sudo loginctl terminate-seat seat0
   

2. Load the DRM driver

   sudo modprobe nvidia-drm modeset=1
   

3. Run a test pipeline

   gst-launch-1.0 videotestsrc ! nvvidconv ! 'video/x-raw(memory:NVMM), format=NV12' ! nvdrmvideosink