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qt.qpa.xcb: could not connect to display



  • I have the same issue still.

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

    I tried to run this command on terminal but it gives me nothing.

    export QT_DEBUG_PLUGINS=1
    


  • @suslucoder
    ı got this

    QFactoryLoader::QFactoryLoader() checking directory path "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms" ...
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqeglfs.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqeglfs.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "eglfs"
            ]
        },
        "archreq": 0,
        "className": "QEglFSIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("eglfs")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqlinuxfb.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqlinuxfb.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "linuxfb"
            ]
        },
        "archreq": 0,
        "className": "QLinuxFbIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("linuxfb")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqminimal.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqminimal.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "minimal"
            ]
        },
        "archreq": 0,
        "className": "QMinimalIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("minimal")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqminimalegl.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqminimalegl.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "minimalegl"
            ]
        },
        "archreq": 0,
        "className": "QMinimalEglIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("minimalegl")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqoffscreen.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqoffscreen.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "offscreen"
            ]
        },
        "archreq": 0,
        "className": "QOffscreenIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("offscreen")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqvnc.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqvnc.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "vnc"
            ]
        },
        "archreq": 0,
        "className": "QVncIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("vnc")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-egl.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-egl.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "wayland-egl"
            ]
        },
        "archreq": 0,
        "className": "QWaylandEglPlatformIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("wayland-egl")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-generic.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-generic.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "wayland"
            ]
        },
        "archreq": 0,
        "className": "QWaylandIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("wayland")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-xcomposite-egl.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-xcomposite-egl.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "wayland-xcomposite-egl"
            ]
        },
        "archreq": 0,
        "className": "QWaylandXCompositeEglPlatformIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("wayland-xcomposite-egl")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-xcomposite-glx.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwayland-xcomposite-glx.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "wayland-xcomposite-glx"
            ]
        },
        "archreq": 0,
        "className": "QWaylandXCompositeGlxPlatformIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("wayland-xcomposite-glx")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwebgl.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqwebgl.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "webgl"
            ]
        },
        "archreq": 0,
        "className": "QWebGLIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("webgl")
    QFactoryLoader::QFactoryLoader() looking at "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqxcb.so"
    Found metadata in lib /home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqxcb.so, metadata=
    {
        "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
        "MetaData": {
            "Keys": [
                "xcb"
            ]
        },
        "archreq": 0,
        "className": "QXcbIntegrationPlugin",
        "debug": false,
        "version": 330752
    }
    Got keys from plugin meta data ("xcb")
    QFactoryLoader::QFactoryLoader() checking directory path "/home/ilknur/yi/platforms" ...
    loaded library "/home/ilknur/Qt5.12.10/5.12.10/gcc_64/plugins/platforms/libqxcb.so"
    qt.qpa.xcb: could not connect to display 
    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.
    

  • Lifetime Qt Champion

    Hi,

    Please do not open multiple threads with the same question.

    You are already getting answers in your other thread about the same subject.

    Closing this one


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