Qt Creator + Ubuntu 20.04
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@fem_dev
In which case, doing something in a shell won't help...Can you please go into terminal/shell, type
export QT_DEBUG_PLUGINS=1, and then run your program from there? As a developer you ought know about setting environment variables. -
@JonB Yes, I can try to do it.
But, I always used the Qt Creator green "run" button.
Is it possible yet on Ubuntu 20.04?
Or I will need to run and debug my Qt applications using Ubuntu Terminal now?Or I will need to run and debug my Qt applications using Ubuntu Terminal now?
no no, we just try to find out why it gives that error. i also had in Ubuntu Mint after an upgrade.
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@JonB Yes, I can try to do it.
But, I always used the Qt Creator green "run" button.
Is it possible yet on Ubuntu 20.04?
Or I will need to run and debug my Qt applications using Ubuntu Terminal now?@fem_dev said in Qt Creator + Ubuntu 20.04:
But, I always used the Qt Creator green "run" button.
Then read the manual about how to set an environment variable for your running your program from within Creator.
Or I will need to run and debug my Qt applications using Ubuntu Terminal now?
No, I'm just trying to get you to do something to get some information this time, but it's proving tricky! ;-)
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Or I will need to run and debug my Qt applications using Ubuntu Terminal now?
no no, we just try to find out why it gives that error. i also had in Ubuntu Mint after an upgrade.
In the Ubuntu Terminal....I set the environment variable and run the compiled Qt example using:
./addressbookI got this Terminal result:
QFactoryLoader::QFactoryLoader() checking directory path "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms" ... QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqeglfs.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("eglfs") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqlinuxfb.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("linuxfb") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqminimal.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("minimal") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqminimalegl.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("minimalegl") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqoffscreen.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("offscreen") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqvnc.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("vnc") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-egl.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland-egl") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-generic.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-xcomposite-egl.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland-xcomposite-egl") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-xcomposite-glx.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland-xcomposite-glx") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("xcb") QFactoryLoader::QFactoryLoader() checking directory path "/home/nyck/Qt/Examples/Qt-5.15.0/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_0_GCC_64bit-Debug/platforms" ... Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory) QLibraryPrivate::loadPlugin failed on "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)" 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, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb. Aborted (core dumped) nyck@gs65:~/Qt/Examples/Qt-5.15.0/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_0_GCC_64bit-Debug$Any ideas?
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In the Ubuntu Terminal....I set the environment variable and run the compiled Qt example using:
./addressbookI got this Terminal result:
QFactoryLoader::QFactoryLoader() checking directory path "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms" ... QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqeglfs.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("eglfs") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqlinuxfb.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("linuxfb") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqminimal.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("minimal") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqminimalegl.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("minimalegl") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqoffscreen.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("offscreen") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqvnc.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("vnc") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-egl.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland-egl") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-generic.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-xcomposite-egl.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland-xcomposite-egl") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqwayland-xcomposite-glx.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("wayland-xcomposite-glx") QFactoryLoader::QFactoryLoader() looking at "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" Found metadata in lib /home/nyck/Qt/5.15.0/gcc_64/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 } Got keys from plugin meta data ("xcb") QFactoryLoader::QFactoryLoader() checking directory path "/home/nyck/Qt/Examples/Qt-5.15.0/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_0_GCC_64bit-Debug/platforms" ... Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory) QLibraryPrivate::loadPlugin failed on "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)" 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, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb. Aborted (core dumped) nyck@gs65:~/Qt/Examples/Qt-5.15.0/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_0_GCC_64bit-Debug$Any ideas?
Hi
Good work.Got keys from plugin meta data ("xcb") QFactoryLoader::QFactoryLoader() checking directory path "/home/nyck/Qt/Examples/Qt-5.15.0/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_0_GCC_64bit-Debug/platforms" ... Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory) QLibraryPrivate::loadPlugin failed on "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)"aha !
libxcb-xineramatry
apt-get install libxcb-xinerama -
Hi
Good work.Got keys from plugin meta data ("xcb") QFactoryLoader::QFactoryLoader() checking directory path "/home/nyck/Qt/Examples/Qt-5.15.0/widgets/itemviews/build-addressbook-Desktop_Qt_5_15_0_GCC_64bit-Debug/platforms" ... Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory) QLibraryPrivate::loadPlugin failed on "/home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /home/nyck/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)"aha !
libxcb-xineramatry
apt-get install libxcb-xinerama -
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