qt.qpa.plugin:即使发现了Qt平台插件"xcb“，也无法加载它。Pop-Os 21.10 Gnome V40.4.0

Question

似乎有很多类似的问题。我在StackOverflow和其他一些地方(例如https://discuss.pixls.us/t/solved-could-not-load-the-qt-platform-plugin-xcb-in-even-though-it-was-found/17677)上看了其中的5个，但是没有一个解决方案有效。一切都安装好了。一切都是最新的。下面是输出。任何和所有的帮助都将不胜感激。

QFactoryLoader::QFactoryLoader() checking directory path "/home/my_user_name/anaconda3/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/home/my_user_name/anaconda3/plugins/platforms/libqeglfs.so"
Found metadata in lib /home/my_user_name/anaconda3/plugins/platforms/libqeglfs.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "eglfs"
        ]
    },
    "className": "QEglFSIntegrationPlugin",
    "debug": false,
    "version": 329991
}


Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/home/my_user_name/anaconda3/plugins/platforms/libqminimal.so"
Found metadata in lib /home/my_user_name/anaconda3/plugins/platforms/libqminimal.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 329991
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/home/my_user_name/anaconda3/plugins/platforms/libqminimalegl.so"
Found metadata in lib /home/my_user_name/anaconda3/plugins/platforms/libqminimalegl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimalegl"
        ]
    },
    "className": "QMinimalEglIntegrationPlugin",
    "debug": false,
    "version": 329991
}


Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at "/home/my_user_name/anaconda3/plugins/platforms/libqoffscreen.so"
Found metadata in lib /home/my_user_name/anaconda3/plugins/platforms/libqoffscreen.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 329991
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/home/my_user_name/anaconda3/plugins/platforms/libqvnc.so"
Found metadata in lib /home/my_user_name/anaconda3/plugins/platforms/libqvnc.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "vnc"
        ]
    },
    "className": "QVncIntegrationPlugin",
    "debug": false,
    "version": 329991
}


Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at "/home/my_user_name/anaconda3/plugins/platforms/libqxcb.so"
Found metadata in lib /home/my_user_name/anaconda3/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 329991
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/home/my_user_name/anaconda3/bin/platforms" ...
Cannot load library /home/my_user_name/anaconda3/plugins/platforms/libqxcb.so: (/home/my_user_name/anaconda3/plugins/platforms/../../lib/libQt5XcbQpa.so.5: undefined symbol: _ZN11QFontEngine14bitmapForGlyphEj6QFixedRK10QTransform, version Qt_5_PRIVATE_API)
QLibraryPrivate::loadPlugin failed on "/home/my_user_name/anaconda3/plugins/platforms/libqxcb.so" : "Cannot load library /home/my_user_name/anaconda3/plugins/platforms/libqxcb.so: (/home/my_user_name/anaconda3/plugins/platforms/../../lib/libQt5XcbQpa.so.5: undefined symbol: _ZN11QFontEngine14bitmapForGlyphEj6QFixedRK10QTransform, version Qt_5_PRIVATE_API)"
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, minimal, minimalegl, offscreen, vnc, xcb.

[1]    9588 IOT instruction (core dumped)  streamdeck

Answer 1

不确定这个特定的软件，但原因往往是不兼容的Qt版本，比如Qt 6应用程序试图加载需要Qt 5的库，反之亦然，或者这两个Qt版本配置不同。

Answer 2

尝试在外壳中执行以下操作：

export LD_LIBRARY_PATH=/home/<your_user_name>/anaconda3/lib:${LD_LIBRARY_PATH}

这将为通过Anconda安装查找共享库所使用的位置占优势。

在同一个shell中启动应用程序。

Answer 3

我遇到了类似的问题，并通过安装以下模块解决了这个问题：

sudo apt-获取安装libxcb-xinerama0 0