☰

Qtプラットフォームプラグイン「wayland」が見つかりません

tag-icon • tag-icon arch-linux pacman qt wayland sway
Qtプラットフォームプラグイン「wayland」が見つかりません

vlcを実行すると、次のエラーが発生します。

$ vlc
VLC media player 3.0.11 Vetinari (revision 3.0.11-0-gdc0c5ced72)
[0000561d2cc24a30] vlcpulse audio output error: PulseAudio server connection failure: Connection refused
[0000561d2cbf2f50] main interface error: no suitable interface module
[0000561d2cb5a460] main libvlc error: interface "globalhotkeys,none" initialization failed
[0000561d2cb5a460] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
qt.qpa.plugin: Could not find the Qt platform plugin "wayland" in ""
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.

Aborted (core dumped)

pacmanArch Linuxにvlcをインストールしました。ウィンドウマネージャswayがあるvlcを実行しようとしていますwayland。

次の環境変数のいずれかを設定した後にvlcを実行すると、同じエラーが発生します。

$ QT_QPT_PLATFORM=wayland vlc
$ QT_QPT_PLATFORM=offscreen vlc
$ QT_PLUGIN_PATH=/usr/lib/qt/plugins/ vlc

pacmanまた、vlcを削除して（アンインストールおよび再インストール）、再インストールしてもqt同じエラーは持続しませんでした。

これは、QT_DEBUG_PLUGINSフラグをオンにした状態でvlcを実行した結果です。

$ QT_DEBUG_PLUGINS=1 vlc
VLC media player 3.0.11 Vetinari (revision 3.0.11-0-gdc0c5ced72)
[000055b67a7aea30] vlcpulse audio output error: PulseAudio server connection failure: Connection refused
[000055b67a847f60] main interface error: no suitable interface module
[000055b67a6e4460] main libvlc error: interface "globalhotkeys,none" initialization failed
[000055b67a6e4460] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
QFactoryLoader::QFactoryLoader() checking directory path "/usr/lib/qt/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt/plugins/platforms/libqeglfs.so"
Found metadata in lib /usr/lib/qt/plugins/platforms/libqeglfs.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "eglfs"
        ]
    },
    "archreq": 0,
    "className": "QEglFSIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("eglfs")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt/plugins/platforms/libqlinuxfb.so"
Found metadata in lib /usr/lib/qt/plugins/platforms/libqlinuxfb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "linuxfb"
        ]
    },
    "archreq": 0,
    "className": "QLinuxFbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt/plugins/platforms/libqminimal.so"
Found metadata in lib /usr/lib/qt/plugins/platforms/libqminimal.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 0,
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt/plugins/platforms/libqminimalegl.so"
Found metadata in lib /usr/lib/qt/plugins/platforms/libqminimalegl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimalegl"
        ]
    },
    "archreq": 0,
    "className": "QMinimalEglIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("minimalegl")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt/plugins/platforms/libqoffscreen.so"
Found metadata in lib /usr/lib/qt/plugins/platforms/libqoffscreen.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 0,
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt/plugins/platforms/libqvnc.so"
Found metadata in lib /usr/lib/qt/plugins/platforms/libqvnc.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "vnc"
        ]
    },
    "archreq": 0,
    "className": "QVncIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at "/usr/lib/qt/plugins/platforms/libqxcb.so"
Found metadata in lib /usr/lib/qt/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "archreq": 0,
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 331520
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms" ...
qt.qpa.plugin: Could not find the Qt platform plugin "wayland" in ""
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.

Aborted (core dumped)

ldd /usr/lib/qt/plugins/platforms/libqxcb.soこれは、すべての依存関係がインストールされたことを意味する出力です。

$ ldd /usr/lib/qt/plugins/platforms/libqxcb.so
    linux-vdso.so.1 (0x00007ffc2cbdc000)
    libQt5XcbQpa.so.5 => /usr/lib/libQt5XcbQpa.so.5 (0x00007faa3c086000)
    libQt5Gui.so.5 => /usr/lib/libQt5Gui.so.5 (0x00007faa3b9b3000)
    libQt5Core.so.5 => /usr/lib/libQt5Core.so.5 (0x00007faa3b461000)
    libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007faa3b284000)
    libc.so.6 => /usr/lib/libc.so.6 (0x00007faa3b0bd000)
    libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x00007faa3b072000)
    libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00007faa3af9c000)
    libQt5DBus.so.5 => /usr/lib/libQt5DBus.so.5 (0x00007faa3af16000)
    libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007faa3aef4000)
    libX11-xcb.so.1 => /usr/lib/libX11-xcb.so.1 (0x00007faa3aeef000)
    libxcb-icccm.so.4 => /usr/lib/libxcb-icccm.so.4 (0x00007faa3aee9000)
    libxcb-image.so.0 => /usr/lib/libxcb-image.so.0 (0x00007faa3aee3000)
    libxcb-shm.so.0 => /usr/lib/libxcb-shm.so.0 (0x00007faa3aedc000)
    libxcb-keysyms.so.1 => /usr/lib/libxcb-keysyms.so.1 (0x00007faa3aed7000)
    libxcb-randr.so.0 => /usr/lib/libxcb-randr.so.0 (0x00007faa3aec5000)
    libxcb-render-util.so.0 => /usr/lib/libxcb-render-util.so.0 (0x00007faa3aebf000)
    libxcb-render.so.0 => /usr/lib/libxcb-render.so.0 (0x00007faa3aeaf000)
    libxcb-shape.so.0 => /usr/lib/libxcb-shape.so.0 (0x00007faa3aeaa000)
    libxcb-sync.so.1 => /usr/lib/libxcb-sync.so.1 (0x00007faa3ae9e000)
    libxcb-xfixes.so.0 => /usr/lib/libxcb-xfixes.so.0 (0x00007faa3ae94000)
    libxcb-xinerama.so.0 => /usr/lib/libxcb-xinerama.so.0 (0x00007faa3ae8f000)
    libxcb-xkb.so.1 => /usr/lib/libxcb-xkb.so.1 (0x00007faa3ae71000)
    libxcb-xinput.so.0 => /usr/lib/libxcb-xinput.so.0 (0x00007faa3ae4c000)
    libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007faa3ae22000)
    libX11.so.6 => /usr/lib/libX11.so.6 (0x00007faa3acdf000)
    libSM.so.6 => /usr/lib/libSM.so.6 (0x00007faa3acd5000)
    libICE.so.6 => /usr/lib/libICE.so.6 (0x00007faa3acb8000)
    libxkbcommon-x11.so.0 => /usr/lib/libxkbcommon-x11.so.0 (0x00007faa3acae000)
    libxkbcommon.so.0 => /usr/lib/libxkbcommon.so.0 (0x00007faa3ac6d000)
    libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00007faa3ab44000)
    libm.so.6 => /usr/lib/libm.so.6 (0x00007faa3a9fd000)
    libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007faa3a9e3000)
    libGL.so.1 => /usr/lib/libGL.so.1 (0x00007faa3a95d000)
    libpng16.so.16 => /usr/lib/libpng16.so.16 (0x00007faa3a923000)
    libz.so.1 => /usr/lib/libz.so.1 (0x00007faa3a909000)
    libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0x00007faa3a83a000)
    libmd4c.so.0 => /usr/lib/libmd4c.so.0 (0x00007faa3a822000)
    libsystemd.so.0 => /usr/lib/libsystemd.so.0 (0x00007faa3a777000)
    libdouble-conversion.so.3 => /usr/lib/libdouble-conversion.so.3 (0x00007faa3a760000)
    libicui18n.so.67 => /usr/lib/libicui18n.so.67 (0x00007faa3a460000)
    libicuuc.so.67 => /usr/lib/libicuuc.so.67 (0x00007faa3a279000)
    libdl.so.2 => /usr/lib/libdl.so.2 (0x00007faa3a273000)
    libpcre2-16.so.0 => /usr/lib/libpcre2-16.so.0 (0x00007faa3a1e6000)
    libzstd.so.1 => /usr/lib/libzstd.so.1 (0x00007faa3a114000)
    /usr/lib64/ld-linux-x86-64.so.2 (0x00007faa3c1d8000)
    libexpat.so.1 => /usr/lib/libexpat.so.1 (0x00007faa3a0e4000)
    libbz2.so.1.0 => /usr/lib/libbz2.so.1.0 (0x00007faa3a0d1000)
    libdbus-1.so.3 => /usr/lib/libdbus-1.so.3 (0x00007faa3a07c000)
    libxcb-util.so.1 => /usr/lib/libxcb-util.so.1 (0x00007faa3a072000)
    libXau.so.6 => /usr/lib/libXau.so.6 (0x00007faa3a06d000)
    libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00007faa3a065000)
    libuuid.so.1 => /usr/lib/libuuid.so.1 (0x00007faa3a05c000)
    libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007faa39fea000)
    libGLdispatch.so.0 => /usr/lib/libGLdispatch.so.0 (0x00007faa39f31000)
    libGLX.so.0 => /usr/lib/libGLX.so.0 (0x00007faa39efe000)
    libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0x00007faa39ed9000)
    librt.so.1 => /usr/lib/librt.so.1 (0x00007faa39ece000)
    liblzma.so.5 => /usr/lib/liblzma.so.5 (0x00007faa39ea6000)
    liblz4.so.1 => /usr/lib/liblz4.so.1 (0x00007faa39e84000)
    libgcrypt.so.20 => /usr/lib/libgcrypt.so.20 (0x00007faa39d61000)
    libicudata.so.67 => /usr/lib/libicudata.so.67 (0x00007faa3824a000)
    libgpg-error.so.0 => /usr/lib/libgpg-error.so.0 (0x00007faa38223000)

どんな助けでも大変感謝します。

答え1

vlcはQt 5アプリケーションです。 ~によると建築ウィキペディア、Qtアプリケーションを実行するには、Waylandアプリケーションに対応できる環境変数をインストールまたは使用する必要waylandがあります。 Waylandで誤動作するアプリケーションの場合は、アプリケーションを実行する前に使用してください。qt5-waylandqt6-waylandQT_QPA_PLATFORM=waylandQT_QPA_PLATFORM=xcb

関連情報