qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
Solved
General and Desktop
-
Im running an ubuntu 20.04.1 on a windows machine through windows-linux-subsytem (version 2), i was trying to run gambas3, but i had some issues:
Got keys from plugin meta data ("xcb") QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms" ... loaded library "**/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so**" 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. AbortedI read the forum and i found similar problems, so i tried to reinstall libxcb, but i got this:
~$ sudo apt-get install libxcb [sudo] password for <user>: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package libxcb ~$ sudo apt-get --reinstall install libxcb Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package libxcbI made an ldd:
~$ ldd /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so linux-vdso.so.1 (0x00007ffe58fe9000) libQt5XcbQpa.so.5 => /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 (0x00007f26f13b3000) libQt5Gui.so.5 => /lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007f26f0dc8000) libQt5Core.so.5 => /lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f26f087f000) libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f26f069e000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f26f04ac000) libfontconfig.so.1 => /lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f26f0465000) libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f26f03a4000) libQt5DBus.so.5 => /lib/x86_64-linux-gnu/libQt5DBus.so.5 (0x00007f26f0308000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f26f02e5000) libX11-xcb.so.1 => /lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f26f02e0000) libxcb-xinput.so.0 => /lib/x86_64-linux-gnu/libxcb-xinput.so.0 (0x00007f26f02bc000) libxcb-icccm.so.4 => /lib/x86_64-linux-gnu/libxcb-icccm.so.4 (0x00007f26f02b5000) libxcb-image.so.0 => /lib/x86_64-linux-gnu/libxcb-image.so.0 (0x00007f26f00ae000) libxcb-shm.so.0 => /lib/x86_64-linux-gnu/libxcb-shm.so.0 (0x00007f26f00a9000) libxcb-keysyms.so.1 => /lib/x86_64-linux-gnu/libxcb-keysyms.so.1 (0x00007f26f00a4000) libxcb-randr.so.0 => /lib/x86_64-linux-gnu/libxcb-randr.so.0 (0x00007f26f0091000) libxcb-render-util.so.0 => /lib/x86_64-linux-gnu/libxcb-render-util.so.0 (0x00007f26f008a000) libxcb-render.so.0 => /lib/x86_64-linux-gnu/libxcb-render.so.0 (0x00007f26f007b000) libxcb-shape.so.0 => /lib/x86_64-linux-gnu/libxcb-shape.so.0 (0x00007f26f0074000) libxcb-sync.so.1 => /lib/x86_64-linux-gnu/libxcb-sync.so.1 (0x00007f26f006a000) libxcb-xfixes.so.0 => /lib/x86_64-linux-gnu/libxcb-xfixes.so.0 (0x00007f26f0060000) libxcb-xinerama.so.0 => /lib/x86_64-linux-gnu/libxcb-xinerama.so.0 (0x00007f26f005b000) libxcb-xkb.so.1 => /lib/x86_64-linux-gnu/libxcb-xkb.so.1 (0x00007f26f003d000) libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f26f0013000) libXrender.so.1 => /lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f26efe07000) libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f26efcca000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f26efb7b000) libSM.so.6 => /lib/x86_64-linux-gnu/libSM.so.6 (0x00007f26efb70000) libICE.so.6 => /lib/x86_64-linux-gnu/libICE.so.6 (0x00007f26efb52000) libxkbcommon-x11.so.0 => /lib/x86_64-linux-gnu/libxkbcommon-x11.so.0 (0x00007f26efb47000) libxkbcommon.so.0 => /lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f26efb03000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f26ef9da000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f26ef9bf000) libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007f26ef937000) libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f26ef8ff000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f26ef8e1000) libharfbuzz.so.0 => /lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f26ef7dc000) libicui18n.so.66 => /lib/x86_64-linux-gnu/libicui18n.so.66 (0x00007f26ef4dd000) libicuuc.so.66 => /lib/x86_64-linux-gnu/libicuuc.so.66 (0x00007f26ef2f7000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f26ef2f1000) libpcre2-16.so.0 => /lib/x86_64-linux-gnu/libpcre2-16.so.0 (0x00007f26ef26e000) libdouble-conversion.so.3 => /lib/x86_64-linux-gnu/libdouble-conversion.so.3 (0x00007f26ef256000) /lib64/ld-linux-x86-64.so.2 (0x00007f26f155f000) libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f26ef228000) libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007f26ef21f000) libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f26ef1ce000) libxcb-util.so.1 => /lib/x86_64-linux-gnu/libxcb-util.so.1 (0x00007f26eefc8000) libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007f26eefc0000) libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f26eefb8000) libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f26eef9e000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f26eef2b000) libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f26eee73000) libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f26eee3d000) libgraphite2.so.3 => /lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f26eee10000) libicudata.so.66 => /lib/x86_64-linux-gnu/libicudata.so.66 (0x00007f26ed34f000) libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f26ed2a0000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f26ed295000) liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f26ed26a000) liblz4.so.1 => /lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f26ed249000) libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f26ed12b000) libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f26ed108000)I look for the specific package:
~$ apt-file find libqxcb.so libqt5gui5: /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so libqt5gui5-gles: /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so nsight-compute: /usr/lib/nsight-compute/host/linux-desktop-glibc_2_11_3-x64/Plugins/platforms/libqxcb.so nsight-systems: /usr/lib/nsight-systems/Host-x86_64/Plugins/platforms/libqxcb.soI guess i have it, but i wonder why i cant install it?
-
@gjoe said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
qt.qpa.xcb: could not connect to display
It looks like you don't have an X server running.
See this article for instance about WLS2, specifically the section "Run GUI applications in WSL with X11 Forwarding" -
What do you think i should do to resolve my problem?
I was trying to emulate a graphical application (gambas) with vcxsrv server.
~$ gambas3 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. Aborted -
@gjoe said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:
qt.qpa.xcb: could not connect to display
It looks like you don't have an X server running.
See this article for instance about WLS2, specifically the section "Run GUI applications in WSL with X11 Forwarding"
