# Anki 2.1.47 shows blank main window on Kubuntu 21.10 impish

**URL:** <https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204>\
**Category:** Help\
**Created:** [September 11, 2021, 8:41am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204 "2021-09-11T08:41:03Z")\
**Posts on this page:** 9\
**Page:** 1

<div class="post-metadata">

**Author:** ![mariusz\_dykierek](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@mariusz\_dykierek](https://forums.ankiweb.net/u/mariusz_dykierek)\
**Post date:** [September 11, 2021, 8:41am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/1 "2021-09-11T08:41:03Z")

</div>

Installed latest version from [ankiweb.net](http://ankiweb.net) on Kubuntu 21.10 development branch.  
No matter what driver I choose, the window remains empty under the menu bar.  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/2X/4/4239bc9cb45dfa7bf03cdacd9ad41e5d5f115a2f.png)  
This is not the first time I have to fight this issue, but this time I cannot get past it.

Despite the core dump at the application exit, the QT\_DEBUG\_PLUGINS=1 anki  
does not seem to point me to anything specific:  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms” …  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqeglfs.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/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  
}

Qt debug: Got keys from plugin meta data (“eglfs”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqlinuxfb.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/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  
}

Qt debug: Got keys from plugin meta data (“linuxfb”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqminimal.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/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  
}

Qt debug: Got keys from plugin meta data (“minimal”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqminimalegl.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/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  
}

Qt debug: Got keys from plugin meta data (“minimalegl”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqoffscreen.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/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  
}

Qt debug: Got keys from plugin meta data (“offscreen”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqvnc.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/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  
}

Qt debug: Got keys from plugin meta data (“vnc”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqwayland-egl.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/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”: 331520  
}

Qt debug: Got keys from plugin meta data (“wayland-egl”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqwayland-generic.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/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”: 331520  
}

Qt debug: Got keys from plugin meta data (“wayland”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqwayland-xcomposite-egl.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/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”: 331520  
}

Qt debug: Got keys from plugin meta data (“wayland-xcomposite-egl”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqwayland-xcomposite-glx.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/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”: 331520  
}

Qt debug: Got keys from plugin meta data (“wayland-xcomposite-glx”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqwebgl.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqwebgl.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3”,  
“MetaData”: {  
“Keys”: [  
“webgl”  
]  
},  
“archreq”: 0,  
“className”: “QWebGLIntegrationPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“webgl”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqxcb.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/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  
}

Qt debug: Got keys from plugin meta data (“xcb”)  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/platforms” …  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforms/libqxcb.so”  
Qt debug: loaded library “Xcursor”  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platformthemes” …  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platformthemes/libqgtk2.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/platformthemes/libqgtk2.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPA.QPlatformThemeFactoryInterface.5.1”,  
“MetaData”: {  
“Keys”: [  
“gtk2”  
]  
},  
“archreq”: 0,  
“className”: “QGtk2ThemePlugin”,  
“debug”: false,  
“version”: 331264  
}

Qt debug: Got keys from plugin meta data (“gtk2”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platformthemes/libqgtk3.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/platformthemes/libqgtk3.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPA.QPlatformThemeFactoryInterface.5.1”,  
“MetaData”: {  
“Keys”: [  
“gtk3”  
]  
},  
“archreq”: 0,  
“className”: “QGtk3ThemePlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“gtk3”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platformthemes/libqxdgdesktopportal.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/platformthemes/libqxdgdesktopportal.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPA.QPlatformThemeFactoryInterface.5.1”,  
“MetaData”: {  
“Keys”: [  
“xdgdesktopportal”,  
“flatpak”,  
“snap”  
]  
},  
“archreq”: 0,  
“className”: “QXdgDesktopPortalThemePlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“xdgdesktopportal”, “flatpak”, “snap”)  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/platformthemes” …  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts” …  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts/libcomposeplatforminputcontextplugin.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1”,  
“MetaData”: {  
“Keys”: [  
“compose”,  
“xim”  
]  
},  
“archreq”: 0,  
“className”: “QComposePlatformInputContextPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“compose”, “xim”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts/libfcitxplatforminputcontextplugin.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts/libfcitxplatforminputcontextplugin.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1”,  
“MetaData”: {  
“Keys”: [  
“fcitx”  
]  
},  
“archreq”: 0,  
“className”: “QFcitxPlatformInputContextPlugin”,  
“debug”: false,  
“version”: 331264  
}

Qt debug: Got keys from plugin meta data (“fcitx”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPlatformInputContextFactoryInterface.5.1”,  
“MetaData”: {  
“Keys”: [  
“ibus”  
]  
},  
“archreq”: 0,  
“className”: “QIbusPlatformInputContextPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“ibus”)  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/platforminputcontexts” …  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/platforminputcontexts/libibusplatforminputcontextplugin.so”  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/xcbglintegrations” …  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/xcbglintegrations/libqxcb-egl-integration.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/xcbglintegrations/libqxcb-egl-integration.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPA.Xcb.QXcbGlIntegrationFactoryInterface.5.5”,  
“MetaData”: {  
“Keys”: [  
“xcb\_egl”  
]  
},  
“archreq”: 0,  
“className”: “QXcbEglIntegrationPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“xcb\_egl”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/xcbglintegrations/libqxcb-glx-integration.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/xcbglintegrations/libqxcb-glx-integration.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QPA.Xcb.QXcbGlIntegrationFactoryInterface.5.5”,  
“MetaData”: {  
“Keys”: [  
“xcb\_glx”  
]  
},  
“archreq”: 0,  
“className”: “QXcbGlxIntegrationPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“xcb\_glx”)  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/xcbglintegrations” …  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/xcbglintegrations/libqxcb-glx-integration.so”  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/styles” …  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/styles” …  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats” …  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqgif.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqgif.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“gif”  
],  
“MimeTypes”: [  
“image/gif”  
]  
},  
“archreq”: 0,  
“className”: “QGifPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“gif”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqicns.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqicns.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“icns”  
],  
“MimeTypes”: [  
“image/x-icns”  
]  
},  
“archreq”: 0,  
“className”: “QICNSPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“icns”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqico.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqico.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“ico”,  
“cur”  
],  
“MimeTypes”: [  
“image/vnd.microsoft.icon”,  
“image/vnd.microsoft.icon”  
]  
},  
“archreq”: 0,  
“className”: “QICOPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“ico”, “cur”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqjpeg.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqjpeg.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“jpg”,  
“jpeg”  
],  
“MimeTypes”: [  
“image/jpeg”,  
“image/jpeg”  
]  
},  
“archreq”: 0,  
“className”: “QJpegPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“jpg”, “jpeg”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqsvg.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqsvg.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“svg”,  
“svgz”  
],  
“MimeTypes”: [  
“image/svg+xml”,  
“image/svg+xml-compressed”  
]  
},  
“archreq”: 0,  
“className”: “QSvgPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“svg”, “svgz”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqtga.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqtga.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“tga”  
],  
“MimeTypes”: [  
“image/x-tga”  
]  
},  
“archreq”: 0,  
“className”: “QTgaPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“tga”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqtiff.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqtiff.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“tiff”,  
“tif”  
],  
“MimeTypes”: [  
“image/tiff”,  
“image/tiff”  
]  
},  
“archreq”: 0,  
“className”: “QTiffPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“tiff”, “tif”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqwbmp.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqwbmp.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“wbmp”  
],  
“MimeTypes”: [  
“image/vnd.wap.wbmp”  
]  
},  
“archreq”: 0,  
“className”: “QWbmpPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“wbmp”)  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqwebp.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqwebp.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QImageIOHandlerFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“webp”  
],  
“MimeTypes”: [  
“image/webp”  
]  
},  
“archreq”: 0,  
“className”: “QWebpPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“webp”)  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/imageformats” …  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqgif.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqicns.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqico.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqjpeg.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqsvg.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqtga.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqtiff.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqwbmp.so”  
Qt debug: loaded library “/usr/local/share/anki/bin/PyQt5/Qt/plugins/imageformats/libqwebp.so”  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/iconengines” …  
Qt debug: QFactoryLoader::QFactoryLoader() looking at “/usr/local/share/anki/bin/PyQt5/Qt/plugins/iconengines/libqsvgicon.so”  
Qt warning: Found metadata in lib /usr/local/share/anki/bin/PyQt5/Qt/plugins/iconengines/libqsvgicon.so, metadata=  
{  
“IID”: “org.qt-project.Qt.QIconEngineFactoryInterface”,  
“MetaData”: {  
“Keys”: [  
“svg”,  
“svgz”,  
“svg.gz”  
]  
},  
“archreq”: 0,  
“className”: “QSvgIconPlugin”,  
“debug”: false,  
“version”: 331520  
}

Qt debug: Got keys from plugin meta data (“svg”, “svgz”, “svg.gz”)  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/iconengines” …  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/accessible” …  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/accessible” …  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/PyQt5/Qt/plugins/accessiblebridge” …  
Qt debug: QFactoryLoader::QFactoryLoader() checking directory path “/usr/local/share/anki/bin/accessiblebridge” …  
Segmentation fault (core dumped)

---

<div class="post-metadata">

**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\
**Post date:** [September 11, 2021, 9:26am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/2 "2021-09-11T09:26:10Z")

</div>

You could try [Running from Python - Frequently Asked Questions](https://faqs.ankiweb.net/running-from-python.html)

---

<div class="post-metadata">

**Author:** ![mariusz\_dykierek](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@mariusz\_dykierek](https://forums.ankiweb.net/u/mariusz_dykierek)\
**Post date:** [September 12, 2021, 9:12am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/3 "2021-09-12T09:12:00Z")

</div>

On Ubuntu there is only python3:  
mariusz@md:~\> which python  
mariusz@md:~\> which python3  
/usr/bin/python3

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<div class="post-metadata">

**Author:** ![gnomek](https://avatars.discourse-cdn.com/v4/letter/g/e79b87/32.png) [@gnomek](https://forums.ankiweb.net/u/gnomek)\
**Post date:** [September 12, 2021, 2:36pm UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/4 "2021-09-12T14:36:03Z")

</div>

This output indicates wayland issue. Read [this thread](https://forums.ankiweb.net/t/anki-crashes-on-aarch-linux/10477/4)  
Perhaps forcing the use of X11 may resolve the issue.

---

<div class="post-metadata">

**Author:** ![mariusz\_dykierek](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@mariusz\_dykierek](https://forums.ankiweb.net/u/mariusz_dykierek)\
**Post date:** [September 12, 2021, 8:51pm UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/5 "2021-09-12T20:51:13Z")

</div>

How do I force X11. I tried export QT\_QPA\_PLATFORM=xcb and the result did not change.  
I also see [Changes in 2.1.45 - Anki Betas](https://betas.ankiweb.net/anki2.1.45.html) following here:  
“Force x11 mode when the packaged build is run on a system that tells Qt to use Wayland, as Wayland is not currently supported by the packaged build.”  
I am not happy with wayland yet, so I stick to X11.

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<div class="post-metadata">

**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\
**Post date:** [September 13, 2021, 2:48am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/6 "2021-09-13T02:48:55Z")

</div>

I’m not sure the logs point to Wayland, and Anki should already be forcing X11. I still recommend you try running from source, using `python3` instead of `python` if necessary.

---

<div class="post-metadata">

**Author:** ![mariusz\_dykierek](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@mariusz\_dykierek](https://forums.ankiweb.net/u/mariusz_dykierek)\
**Post date:** [September 13, 2021, 10:45am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/7 "2021-09-13T10:45:56Z")

</div>

Did all. Including the “./anki-venv/bin/pip install pyqt5==5.13 pyqtwebengine==5.13.0” part and the window remains empty. “Then I may unfortunately be out of luck.” It’s a pity.

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<div class="post-metadata">

**Author:** ![mariusz\_dykierek](https://avatars.discourse-cdn.com/v4/letter/m/4bbf92/32.png) [@mariusz\_dykierek](https://forums.ankiweb.net/u/mariusz_dykierek)\
**Post date:** [September 16, 2021, 7:08am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/8 "2021-09-16T07:08:09Z")

</div>

I may be lucky though. Tried sudo and got error. Used --no-sandbox switch and worked.  
Used -no-sandbox as a regular user and still works. So this is the charm (not listed in man nor --help).  
Now it seems to be a developer task to figure out why it is necessary so it doesn’t fail in the future.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\
**Post date:** [May 1, 2023, 4:50am UTC](https://forums.ankiweb.net/t/anki-2-1-47-shows-blank-main-window-on-kubuntu-21-10-impish/13204/9 "2023-05-01T04:50:42Z")

</div>