I am using Qt 5.5.1 Creator on my virtual machine (Ubuntu 12.04.5 LTS), and Beaglebone black with touch screen. When i write gui application(only one window with push button) and try to deploy it, i get this error :
This application failed to start because it could not find or load the Qt platform plugin "xcb"
Reinstalling the application may fix this problem. bash: line 1: 907 Aborted DISPLAY=':0.0' /opt/proba/Test/Test Application finished with exit code 134.
I was searching on the internet and found that this problem is somehow related to libqxcb.so library, I tried ldd libxcb.so command and result is :
linux-vdso.so.1 (0xbef5a000)
libQt5XcbQpa.so.5 => not found
libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0xb6f67000)
libX11-xcb.so.1 => /usr/lib/arm-linux-gnueabihf/libX11-xcb.so.1 (0xb6f55000)
libXi.so.6 => /usr/lib/arm-linux-gnueabihf/libXi.so.6 (0xb6f3b000)
libxcb-render-util.so.0 => /usr/lib/arm-linux-gnueabihf/libxcb-render-util.so.0 (0xb6f30000)
libSM.so.6 => /usr/lib/arm-linux-gnueabihf/libSM.so.6 (0xb6f1a000)
libICE.so.6 => /usr/lib/arm-linux-gnueabihf/libICE.so.6 (0xb6ef7000)
libxcb-render.so.0 => /usr/lib/arm-linux-gnueabihf/libxcb-render.so.0 (0xb6ee0000)
libxcb.so.1 => /usr/lib/arm-linux-gnueabihf/libxcb.so.1 (0xb6ebb000)
libxcb-image.so.0 => /usr/lib/arm-linux-gnueabihf/libxcb-image.so.0 (0xb6ea7000)
libxcb-icccm.so.4 => /usr/lib/arm-linux-gnueabihf/libxcb-icccm.so.4 (0xb6e9b000)
libxcb-sync.so.1 => /usr/lib/arm-linux-gnueabihf/libxcb-sync.so.1 (0xb6e85000)
libxcb-xfixes.so.0 => /usr/lib/arm-linux-gnueabihf/libxcb-xfixes.so.0 (0xb6e70000)
libxcb-shm.so.0 => /usr/lib/arm-linux-gnueabihf/libxcb-shm.so.0 (0xb6e5d000)
libxcb-randr.so.0 => /usr/lib/arm-linux-gnueabihf/libxcb-randr.so.0 (0xb6e44000)
etc...
As you can see, libQt5XcbQpa.so.5 is not found, even though this library exists in part of my program where i Keep my libraries:
-rw------- 1 debian debian 1140 Feb 9 2016 libQt5XcbQpa.la
-rw------- 1 debian debian 1478 Feb 9 2016 libQt5XcbQpa.prl
lrwxrwxrwx 1 debian debian 21 Mar 1 12:34 libQt5XcbQpa.so -> libQt5XcbQpa.so.5.5.1
lrwxrwxrwx 1 debian debian 21 Mar 1 12:34 libQt5XcbQpa.so.5 -> libQt5XcbQpa.so.5.5.1
lrwxrwxrwx 1 debian debian 21 Mar 1 12:34 libQt5XcbQpa.so.5.5 -> libQt5XcbQpa.so.5.5.1
-rw------- 1 debian debian 602768 Feb 9 2016 libQt5XcbQpa.so.5.5.1
Can any one tell me how to solve this problem,also when I start my application it opens terminal.
Sorry for my bad english.
Your application needs libqxcm.so which requires libQt5XcmQpa.so.5,libQt5DBus.so.5, libQt5Gui.so.5 and libQt5Core.so.5
libqxcm.so will be in the directory platforms in your application directory.
Not forget to create symbolic links for the shared libraries like the following:
libQt5Core.so.5 -> libQt5Core.so.5.5.1
libQt5Gui.so.5 -> libQt5Gui.so.5.5.1
libQt5XcmQpa.so.5 -> libQt5XcmQpa.so.5.5.1
libQt5DBus.so.5 -> libQt5DBus.so.5.5.1
For a detailed answer, check this answer: Deploying dynamically linked Qt 5.7 application on CentOS 7