Failed to establish pipeline of deepstream: No EGL Display

Accelerated Computing Intelligent Video Analytics DeepStream SDK
1

Hardwar: Jetson Xavier Nx
JetPcak: 4.6
deepstream: 6.0

1 App in docker container, script is as following:
#!/bin/bash
sudo docker run -it --restart=always --name=sll8 --net=host --runtime nvidia --device=/dev/video0 --device=/dev/ttyTHS1 --device=/dev/ttyCH341USB0 -e DISPLAY=$DISPLAY -v /tmp/.X11-unix/:/tmp/.X11-unix -w /opt/nvidia/deepstream/deepstream/sources/deepstream_python_apps/apps/sll7 sll8 /bin/bash -c “python3 main.py”

2 error happened:
No protocol specified
No EGL Display
nvbufsurftransform: Could not get EGL display connection

Actually, broken when make pipeline.

if I run “xhost +” before script, then the app works well.

Is “EGL Display” necessary? how to fix this?

2

By the way, I used FakeSink in the pipeline.

4

This command is used to allow external applications to connect to the host’s X display.
If you want to display in Docker, it must be run before Docker starts.

Not necessary if you just use fakesink as you said.

5

Is there another pipe element need EGL display? Even if I just use fakesink, still show “nvbufsurftransform: Could not get EGL display connection” errors.

6

If this problem can not be fixed( I browse releate topics, not find clear solution so far), do you know some way to automatically run “xhost +” before “docker run” when system boot?

7

Hi @zhang.ga

Is there another pipe element need EGL display?

The EGL display is also utilized by nvvideoconvert, so when using DeepStream, I haven’t found any workaround to avoid needing EGL display support.

What I would suggest is disabling X11 on your container by removing DISPLAY=$DISPLAY -v /tmp/.X11-unix/:/tmp/.X11-unix . If you need some kind of feedback on the output you can stream it outside the docker using udpsink.

8

Found a solution, "unset DISPLAY” in container.

Thank you.

9

i think this problem occurs when loading the shared library libnvbufsurftransform.so.

I am not sure what is causing this problem, I will investigate.

Thank you for sharing.

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