Solved Missing xcb plugin in ubuntu 15.04
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Hi.
I installed Qt Creator from Ubuntu SW Center yesterday and I've run into problem with application launch. I get "This application failed to start because it could not find or load the Qt platform plugin "xcb"" when trying to lauch built SW. I've googled this a bit and it should be about missing dependency libraries, but I really cannot determine what.
ldd for libqxcb.so brings same list as for ldd:ing my app.
ldd app
linux-vdso.so.1 => (0x00007ffe63d1e000)
libmtp.so.9 => /usr/lib/x86_64-linux-gnu/libmtp.so.9 (0x00007f6ff55f7000)
libQt5WebKitWidgets.so.5 => /usr/lib/x86_64-linux-gnu/libQt5WebKitWidgets.so.5 (0x00007f6ff5a13000)
libQt5QuickWidgets.so.5 => /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5 (0x00007f6ff5a01000)
libQt5Widgets.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 (0x00007f6ff4f50000)
libQt5WebKit.so.5 => /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 (0x00007f6ff2ad7000)
libQt5Gui.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007f6ff258a000)
libQt5Qml.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 (0x00007f6ff2157000)
libQt5Network.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Network.so.5 (0x00007f6ff58a1000)
libQt5Sql.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Sql.so.5 (0x00007f6ff2115000)
libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f6ff1bd2000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f6ff18c3000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f6ff16ad000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f6ff12e3000)
libusb-1.0.so.0 => /lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007f6ff10cb000)
libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f6ff0de9000)
libQt5PrintSupport.so.5 => /usr/lib/x86_64-linux-gnu/libQt5PrintSupport.so.5 (0x00007f6ff0d76000)
libQt5OpenGL.so.5 => /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5 (0x00007f6ff0d1b000)
libQt5Quick.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 (0x00007f6ff092e000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f6ff0710000)
libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f6ff04be000)
libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f6ff01af000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f6fefe76000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f6fefb6e000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f6fef966000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f6fef74b000)
libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f6fef541000)
libXcomposite.so.1 => /usr/lib/x86_64-linux-gnu/libXcomposite.so.1 (0x00007f6fef33e000)
libjpeg.so.8 => /usr/lib/x86_64-linux-gnu/libjpeg.so.8 (0x00007f6fef0e9000)
libpng12.so.0 => /lib/x86_64-linux-gnu/libpng12.so.0 (0x00007f6feeec3000)
libxslt.so.1 => /usr/lib/x86_64-linux-gnu/libxslt.so.1 (0x00007f6feec86000)
libxml2.so.2 => /usr/lib/x86_64-linux-gnu/libxml2.so.2 (0x00007f6fee8bd000)
libgstreamer-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0 (0x00007f6fee5ac000)
libgstapp-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0 (0x00007f6fee39f000)
libgstbase-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0 (0x00007f6fee140000)
libgstpbutils-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0 (0x00007f6fedf17000)
libgstvideo-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0 (0x00007f6fedcca000)
libgstaudio-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0 (0x00007f6feda7b000)
libsqlite3.so.0 => /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 (0x00007f6fed7b5000)
libicui18n.so.52 => /usr/lib/x86_64-linux-gnu/libicui18n.so.52 (0x00007f6fed3a3000)
libicuuc.so.52 => /usr/lib/x86_64-linux-gnu/libicuuc.so.52 (0x00007f6fed025000)
libGL.so.1 => /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1 (0x00007f6fecd89000)
libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f6fecb32000)
libdouble-conversion.so.1 => /usr/lib/x86_64-linux-gnu/libdouble-conversion.so.1 (0x00007f6fec921000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f6fec71d000)
/lib64/ld-linux-x86-64.so.2 (0x00007f6ff585b000)
libudev.so.1 => /lib/x86_64-linux-gnu/libudev.so.1 (0x00007f6fec50a000)
libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f6fec2f8000)
libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007f6fec0f0000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f6febe83000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f6febc64000)
libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f6feba60000)
liborc-0.4.so.0 => /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0 (0x00007f6feb7dc000)
libgsttag-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0 (0x00007f6feb5a1000)
libicudata.so.52 => /usr/lib/x86_64-linux-gnu/libicudata.so.52 (0x00007f6fe9d34000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f6fe9b0b000)
libglapi.so.0 => /usr/lib/x86_64-linux-gnu/libglapi.so.0 (0x00007f6fe98e1000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f6fe96cf000)
libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007f6fe94cc000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f6fe92c6000)
libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f6fe90c4000)
libxcb-glx.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0 (0x00007f6fe8ead000)
libxcb-dri2.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0 (0x00007f6fe8ca8000)
libxcb-dri3.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 (0x00007f6fe8aa5000)
libxcb-present.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-present.so.0 (0x00007f6fe88a2000)
libxcb-sync.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1 (0x00007f6fe869c000)
libxshmfence.so.1 => /usr/lib/x86_64-linux-gnu/libxshmfence.so.1 (0x00007f6fe849a000)
libXxf86vm.so.1 => /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1 (0x00007f6fe8294000)
libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2 (0x00007f6fe8087000)
libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f6fe7ddf000)
libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f6fe7bc3000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f6fe79bf000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f6fe77b9000)Ideas? Qt creator version:
Qt Creator 3.1.1
Based on Qt 5.4.1 (GCC 4.9.2, 64 bit)Built on Mar 11 2015 at 06:38:20
I've running out of solution proposals from these forums :/.
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Install Qt from the installer provided by Qt Project - it should work.
The issue you describe is very probably an Ubuntu packaging bug, so you can report it to Ubuntu guys.
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Ok, that did it. Thanks a lot.
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Great :-) Happy coding!
