Could not find or load the Qt platform plugin "xcb".
Unsolved
General and Desktop
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When I run my program, I got this error.
This application failed to start because it could not find or load the Qt platform plugin "xcb" in "". Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, xcb. Reinstalling the application may fix this problem.I had searched for it, but thosesolutions , like use export , can not fix that.
If I use ldd, I got this:ran@ran:~$ ldd /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5: version `Qt_5_PRIVATE_API' not found (required by /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so) /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5: version `Qt_5_PRIVATE_API' not found (required by /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so) /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.9' not found (required by /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so) /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5' not found (required by /home/ran/Qt5.9.1/5.9.1/gcc_64/plugins/platforms/libqxcb.so) linux-vdso.so.1 => (0x00007ffd06fc2000) libQt5XcbQpa.so.5 => /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 (0x00007ff34e79a000) libQt5DBus.so.5 => /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 (0x00007ff34e71b000) libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007ff34e519000) libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007ff34e208000) libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007ff34dfc4000) libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007ff34dd1a000) libQt5Gui.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007ff34d7d2000) libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007ff34d2fb000) libGL.so.1 => /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1 (0x00007ff34d062000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007ff34ce45000) libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007ff34cb0a000) libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007ff34c908000) libXi.so.6 => /usr/lib/x86_64-linux-gnu/libXi.so.6 (0x00007ff34c6f8000) libSM.so.6 => /usr/lib/x86_64-linux-gnu/libSM.so.6 (0x00007ff34c4ef000) libICE.so.6 => /usr/lib/x86_64-linux-gnu/libICE.so.6 (0x00007ff34c2d5000) libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007ff34c0b3000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007ff34bd30000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007ff34ba27000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007ff34b811000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007ff34b446000) libxcb-render-util.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-render-util.so.0 (0x00007ff34b242000) libxcb-render.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-render.so.0 (0x00007ff34b038000) libxcb-image.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-image.so.0 (0x00007ff34ae32000) libxcb-icccm.so.4 => /usr/lib/x86_64-linux-gnu/libxcb-icccm.so.4 (0x00007ff34ac2d000) libxcb-sync.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1 (0x00007ff34aa26000) libxcb-xfixes.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-xfixes.so.0 (0x00007ff34a81d000) libxcb-shm.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shm.so.0 (0x00007ff34a619000) libxcb-randr.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-randr.so.0 (0x00007ff34a40b000) libxcb-shape.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-shape.so.0 (0x00007ff34a206000) libxcb-keysyms.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-keysyms.so.1 (0x00007ff34a003000) libxcb-xkb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-xkb.so.1 (0x00007ff349de8000) libxkbcommon-x11.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0 (0x00007ff349bdf000) libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007ff3499a0000) libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007ff349753000) libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007ff3494e3000) libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007ff3492ba000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007ff34909f000) libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0 (0x00007ff348e7a000) libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007ff348c1c000) libicui18n.so.55 => /usr/lib/x86_64-linux-gnu/libicui18n.so.55 (0x00007ff3487b9000) libicuuc.so.55 => /usr/lib/x86_64-linux-gnu/libicuuc.so.55 (0x00007ff348425000) libpcre16.so.3 => /usr/lib/x86_64-linux-gnu/libpcre16.so.3 (0x00007ff3481bf000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007ff347fba000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007ff347db2000) /lib64/ld-linux-x86-64.so.2 (0x000055c18e376000) libxcb-dri3.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 (0x00007ff347baf000) libxcb-present.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-present.so.0 (0x00007ff3479ab000) libxshmfence.so.1 => /usr/lib/x86_64-linux-gnu/libxshmfence.so.1 (0x00007ff3477a8000) libglapi.so.0 => /usr/lib/x86_64-linux-gnu/libglapi.so.0 (0x00007ff347577000) libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007ff347364000) libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007ff347161000) libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007ff346f5b000) libxcb-glx.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0 (0x00007ff346d41000) libxcb-dri2.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0 (0x00007ff346b3c000) libXxf86vm.so.1 => /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1 (0x00007ff346936000) libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2 (0x00007ff346724000) libuuid.so.1 => /lib/x86_64-linux-gnu/libuuid.so.1 (0x00007ff34651f000) libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007ff34631a000) libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007ff346114000) libxcb-util.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-util.so.1 (0x00007ff345f0d000) libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007ff345e88000) libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007ff345c61000) libicudata.so.55 => /usr/lib/x86_64-linux-gnu/libicudata.so.55 (0x00007ff3441aa000) libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007ff343f87000) liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007ff343d65000) libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007ff343a84000) libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007ff34386f000)Can any one help me. Thanks.
Now I have just found out that if I use a caffe model in this program, I will get this error. But hours ago, this program could run properly.
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Hi, seems you have 2 different versions of Qt installed, 5.9.1 in /home/ran and an older version (maybe 5.5.1?) in /usr/lib/x86_64-linux-gnu. And the older version bullies the newer.
You could try upgrading your 5.9.1 to 5.11.1, I think it's more resilient to multiple versions of Qt installed on the same Linux system.
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Hi, seems you have 2 different versions of Qt installed, 5.9.1 in /home/ran and an older version (maybe 5.5.1?) in /usr/lib/x86_64-linux-gnu. And the older version bullies the newer.
You could try upgrading your 5.9.1 to 5.11.1, I think it's more resilient to multiple versions of Qt installed on the same Linux system.
@hskoglund Thinks, I will try it later.
