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



  • I have just updated the Qt version of my Raspberry Pi cross-compilation environment fro m 5.15.0 to 5.15.2, but now I am getting this infamous error again including these errors

    qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in ""
    Failed to move cursor on screen HDMI1: -13
    Failed to move cursor on screen HDMI1: -13
    Could not set cursor on screen HDMI1: -13
    Could not set DRM mode for screen HDMI1 (Permission denied)
    Could not queue DRM page flip on screen HDMI1 (Permission denied)
    

    I had the same issue using the previous version and I could solve it by adding

    DISPLAY=:0
    XDG_SESSION_TYPE=x11 
    

    to my environment variables for SSH, but now I can't even run the program from the Pi itself.

    I think I have all xcb libraries installed. I mean it worked before. Weird that it doesn't work with the newer Qt version.

    Any ideas?


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