Could not find the Qt platform plugin "wayland"
I get the following error when I run vlc:
$ 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)
I have installed vlc using pacman
in Arch Linux. I am trying to run vlc in sway
which is a wayland
window manager.
Running vlc after setting any of the following environment variables, leads to the same error.
$ QT_QPT_PLATFORM=wayland vlc
$ QT_QPT_PLATFORM=offscreen vlc
$ QT_PLUGIN_PATH=/usr/lib/qt/plugins/ vlc
Also, uninstalling vlc and reinstalling it using pacman
(which uninstalls and reinstalls qt
) didn’t resolve the issue; same error persists.
Here is the output of running vlc with the QT_DEBUG_PLUGINS flag on.
$ 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)
And here is the output of ldd /usr/lib/qt/plugins/platforms/libqxcb.so
which implies all dependencies are installed.
$ 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)
Any help is greatly appreciated.
vlc is a Qt 5 application. According to ArchWiki, to run any Qt application in wayland
you need to install qt5-wayland
or qt6-wayland
and use the QT_QPA_PLATFORM=wayland
environment variable to accomodate for wayland applications. For applications misbehaving in wayland, use QT_QPA_PLATFORM=xcb
before running the application.