Error: qt.qpa.xcb: could not connect to display

Jeetu

Hello there,
Greetings of the day,

I am getting the below error of qt.qpa.plugin when running in the docker container. The project works fine on the local Ubuntu:18.04.

Error statement: *qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/miniconda/lib/python3.9/site-packages/cv2/qt/plugins" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: xcb.

Aborted (core dumped)*

I am using ubuntu:18.04 OS on top of docker container.

Any comments for solving the error are appreciated.

Thanks

jsulm

@Jeetu said in Error: qt.qpa.xcb: could not connect to display:

Any comments for solving the error are appreciated.

You do not have running X server in your container it seems

Jeetu

@jsulm Yes, you are right but how do I get one?
Thank you for responding, your response is appreciated.

For better understanding,
I am running my python code inside Docker container on EC2(Ubuntu:18.04) instance.
Looking forward to get the solution.
Thanks

jsulm

@Jeetu I'm not a Docker expert. You should search for running GUI applications in Docker. For example: https://l10nn.medium.com/running-x11-applications-with-docker-75133178d090

Jeetu

@jsulm , Thank you for your response. I have been searching the same but yet not get any solution.
Thanks

Minahil

This solves any display related issues from within docker containers
docker run -it --name $CONTAINER_NAME --network host -e DISPLAY -e TERM -e QT_X11_NO_MITSHM=1 $IMAGE_NAME bash