qt.qpa.plugin: Could not load the Qt platform plugin "xcb"

[zaccharieramzi]

Hi,

I was trying to use the ismrmrdviewer, and after installation I got the following error message when launching the viewer (python3 ismrmrdviewer):

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" 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: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.

[1]    23876 abort      python3 ismrmrdviewer

[dchansen]

This is a problem with your PySide2 installation. Unfortunately it is not uncommon to have multiple (conflicting) Qt installations on your path, which can cause these types of issues. Try installing in a python virtual environment.

[josecyc]

I also ran into this problem and found a solution on this thread.
I had to reinstall libxcb-xinerama0 with:
sudo apt-get install --reinstall libxcb-xinerama0