CODEWITHSUNDEEP
python-3.xopencvamazon-ec2
IgorAlves
IgorAlves

Reputation: 5560

OpenCV 4.4.0: qt.qpa.xcb: could not connect to display on a remote EC2 instance. How to solve this issue?

I am running the Opencv 4.4.0 in a Ubuntu 20.04 AWS-Ec2 instance connected with VSCODE trough the Remote Explorer module.

I am trying to open an image that I have uploaded to the project.

import cv2
img = cv2.imread("imgs/cat1.jpg")
cv2.imshow("Output", img)

But when I run the file (pressing the green arrow) enter image description here I get the follow error:

(env) ubuntu@ip-xxx-xx-xx-xxx:~/vhosts/opencv-ml-images$ /bin/python3 /home/ubuntu/vhosts/opencv-ml-images/chapter1.py
qt.qpa.xcb: could not connect to display 
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/home/ubuntu/.local/lib/python3.8/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)

Does someone knows what is happening? maybe something related to the fact I am running the opencv in a remote computer? How to sove it?

Upvotes: 4

Views: 10498

Answers (1)

Salman Afzal
Salman Afzal

Reputation: 309

I think what you are trying to do is run it on Remote Desktop Connection. I was having the same problem but I am running WSL 2 (Both are quite similar). And I solved it by setting up environment for GUI applications on WSL 2 from https://wiki.ubuntu.com/WSL . Just start your X server and run the code again. It should work. If not, do reply so that we can sort it out together.

Upvotes: 1

Related Questions