带有 WSL 的 CLion 尝试运行 QT 应用程序（无法加载 xcb）答案

【问题标题】：CLion with WSL try to run QT application (xcb can not be loaded)带有 WSL 的 CLion 尝试运行 QT 应用程序（无法加载 xcb）
【发布时间】：2021-03-16 15:37:19
【问题描述】：

我正在尝试从这里https://github.com/vt4a2h/uml-tool 运行代码，但我发现自己遇到了这个错误消息：

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, xcb.

我正在使用带有 WSL 2 的 Windows 10 （Ubuntu 20.04.2 LTS）

我的尝试：

sudo apt-get install -y xserver-xorg xinit
sudo apt-get install -y mesa-utils libegl1-mesa libegl1-mesa-dev libgbm-dev libgbm1 libgl1-mesa-dev libgl1-mesa-dri libgl1-mesa-glx libglu1-mesa libglu1-mesa-dev李>
/etc/X11/xorg.conf ---> -bash: /etc/X11/xorg.conf: 没有那个文件或目录
sudo Xorg -configure

X.Org X Server 1.20.9
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.15.0-130-generic x86_64 Ubuntu
Current Operating System: Linux NB-CJ-U4-5336 5.4.72-microsoft-standard-WSL2 #1 SMP Wed Oct 28 23:40:43 UTC 2020 x86_64
Kernel command line: initrd=\initrd.img panic=-1 pty.legacy_count=0 nr_cpus=12
Build Date: 17 January 2021  09:13:31AM
xorg-server 2:1.20.9-2ubuntu1.2~20.04.1 (For technical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.38.4
       Before reporting problems, check http://wiki.x.org
       to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
       (++) from command line, (!!) notice, (II) informational,
       (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Tue Mar 16 17:32:21 2021
List of video drivers:
       amdgpu
       ati
       intel
       nouveau
       qxl
       radeon
       vmware
       modesetting
       fbdev
       vesa
No devices to configure.  Configuration failed.
(EE) Server terminated with error (2). Closing log file.

sudo apt-get install --reinstall libxcb-xinerama0
导出 QT_DEBUG_PLUGINS=1

我还尝试将以下内容添加到环境中：

QT_DEBUG_PLUGINS=1
QT_QPA_PLATFORM_PLUGIN_PATH=/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/
XAUTHORITY=~/.Xauthority

我的新错误信息是：

QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqeglfs.so"
Found metadata in lib /usr/lib/x86_64-linux-gnu/qt5/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 "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqlinuxfb.so"
Found metadata in lib /usr/lib/x86_64-linux-gnu/qt5/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 "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimal.so"
Found metadata in lib /usr/lib/x86_64-linux-gnu/qt5/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 "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimalegl.so"
Found metadata in lib /usr/lib/x86_64-linux-gnu/qt5/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 "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqoffscreen.so"
Found metadata in lib /usr/lib/x86_64-linux-gnu/qt5/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 "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqvnc.so"
Found metadata in lib /usr/lib/x86_64-linux-gnu/qt5/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 "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
Found metadata in lib /usr/lib/x86_64-linux-gnu/qt5/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 "/usr/lib/x86_64-linux-gnu/qt5/plugins" ...
QFactoryLoader::QFactoryLoader() checking directory path "/mnt/c/MyPrograms/uml-tool/cmake-build-debug" ...
QFactoryLoader::QFactoryLoader() looking at "/mnt/c/MyPrograms/uml-tool/cmake-build-debug/cmake_install.cmake"
QElfParser: '/mnt/c/MyPrograms/uml-tool/cmake-build-debug/cmake_install.cmake' is not an ELF object
"'/mnt/c/MyPrograms/uml-tool/cmake-build-debug/cmake_install.cmake' is not an ELF object" 
         not a plugin
QFactoryLoader::QFactoryLoader() looking at "/mnt/c/MyPrograms/uml-tool/cmake-build-debug/CMakeCache.txt"
QElfParser: '/mnt/c/MyPrograms/uml-tool/cmake-build-debug/CMakeCache.txt' is not an ELF object
"'/mnt/c/MyPrograms/uml-tool/cmake-build-debug/CMakeCache.txt' is not an ELF object" 
         not a plugin
QFactoryLoader::QFactoryLoader() looking at "/mnt/c/MyPrograms/uml-tool/cmake-build-debug/Makefile"
QElfParser: '/mnt/c/MyPrograms/uml-tool/cmake-build-debug/Makefile' is not an ELF object
"'/mnt/c/MyPrograms/uml-tool/cmake-build-debug/Makefile' is not an ELF object" 
         not a plugin
QFactoryLoader::QFactoryLoader() looking at "/mnt/c/MyPrograms/uml-tool/cmake-build-debug/uml-tool"
"Failed to extract plugin meta data from '/mnt/c/MyPrograms/uml-tool/cmake-build-debug/uml-tool'" 
         not a plugin
QFactoryLoader::QFactoryLoader() looking at "/mnt/c/MyPrograms/uml-tool/cmake-build-debug/UmlTool.cbp"
QElfParser: '/mnt/c/MyPrograms/uml-tool/cmake-build-debug/UmlTool.cbp' is not an ELF object
"'/mnt/c/MyPrograms/uml-tool/cmake-build-debug/UmlTool.cbp' is not an ELF object" 
         not a plugin
QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms/libqeglfs.so"
Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms/libqlinuxfb.so"
Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms/libqminimal.so"
Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms/libqminimalegl.so"
Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms/libqoffscreen.so"
Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms/libqvnc.so"
Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/platforms/libqxcb.so"
Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqeglfs.so"
Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqlinuxfb.so"
Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimal.so"
Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqminimalegl.so"
Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqoffscreen.so"
Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqvnc.so"
Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/mnt/c/MyPrograms/uml-tool/cmake-build-debug/platforms" ...
loaded library "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so"
qt.qpa.xcb: could not connect to display 
qt.qpa.xcb: could not connect to display 
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/" 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 (from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/), linuxfb (from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/), minimal (from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/), minimalegl (from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/), offscreen (from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/), vnc (from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/), xcb (from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/), eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb.


Process finished with exit code 134

上面的所有命令都是从 ubuntu 控制台运行的

我该怎么办？我该如何解决这个问题？

【问题讨论】：

标签： windows-subsystem-for-linux clion wsl-2 xserver xcb

【解决方案1】：

您需要一台 X11 服务器。 “WSL X11”的第一个 Google 搜索结果是 https://virtualizationreview.com/articles/2017/02/08/graphical-programs-on-windows-subsystem-on-linux.aspx，上面写着：

要将 WSL 与图形程序一起使用，需要在 Windows 10 系统上安装 X 服务器，并且需要在 Bash 中设置 DISPLAY 变量。幸运的是，有很多 X 服务器在 Windows 上运行。一些更受欢迎的免费软件是 Xming、Cygwin X 和 vcXsrv。

上面的文章还包含有关如何启动 X11 服务器并测试它是否工作的更多说明。

【讨论】：