The full screen case does not work correctly, why?

1.In nvidia jetson orin, deepstream version 6.1.1 L4T35.1
2.I tried to use the plugin nvdrmvideosink to achieve full screen, but it does not work correctly, can you help me to try it? What is the problem.
gst-launch-1.0 filesrc location=<filename.mp4> ! qtdemux name=demux ! h264parse ! nvv4l2decoder ! nvdrmvideosink -e
Full screen

Please set the DRM mode.

gst-launch-1.0 filesrc location=/opt/nvidia/deepstream/deepstream/samples/streams/sample_720p.mp4 ! qtdemux name=demux demux.video_0 ! h264parse ! nvv4l2decoder ! nvdrmvideosink set-mode=1 -e

There is also nvdrmvideosink usage explaination in Accelerated GStreamer — Jetson Linux<br/>Developer Guide 34.1 documentation

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I just shut down the gdm service manually and entered this command via ssh to achieve full screen.
Can the command you gave automatically turn off the gdm service? Does the gdm service have to be shut down?

The gdb service should be shut down. It conflicts with drm. Please read the document.

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