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qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.

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  • hskoglundH Offline
    hskoglundH Offline
    hskoglund
    wrote on last edited by
    #6

    Hi, try: ldd /usr/lib/qt/plugins/platforms/libqxcb.so

    1 Reply Last reply
    1
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #7

      You should try installing the corresponding dev packages on your system.

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

      1 Reply Last reply
      0
      • T Offline
        T Offline
        twar
        wrote on last edited by twar
        #8

        The same as before:

        ~ $ ldd /usr/lib/qt/plugins/platforms/libqxcb.so
        /usr/lib/qt/plugins/platforms/libqxcb.so: error while loading shared libraries: /usr/lib/libxcb-xinerama.so.0: invalid ELF header
        

        but after that

        ~ $ sudo pacman -S libxcb
        [sudo] password for tomasz: 
        warning: libxcb-1.13-1 is up to date -- reinstalling
        resolving dependencies...
        looking for conflicting packages...
        
        Packages (1) libxcb-1.13-1
        
        Total Download Size:   0.99 MiB
        Total Installed Size:  3.96 MiB
        Net Upgrade Size:      0.00 MiB
        
        :: Proceed with installation? [Y/n] Y
        :: Retrieving packages...
         libxcb-1.13-1-x86_64          1017.5 KiB   242K/s 00:04 [##############################] 100%
        (1/1) checking keys in keyring                           [##############################] 100%
        (1/1) checking package integrity                         [##############################] 100%
        (1/1) loading package files                              [##############################] 100%
        (1/1) checking for file conflicts                        [##############################] 100%
        (1/1) checking available disk space                      [##############################] 100%
        :: Processing package changes...
        (1/1) reinstalling libxcb                                [##############################] 100%
        :: Running post-transaction hooks...
        (1/1) Arming ConditionNeedsUpdate...
        ~ $ pacman -Qo /usr/lib/libxcb-xinerama.so.0
        /usr/lib/libxcb-xinerama.so.0 is owned by libxcb 1.13-1
        ~ $ ldd /usr/lib/qt/plugins/platforms/libqxcb.so
        	linux-vdso.so.1 (0x00007ffc93f56000)
        	libQt5XcbQpa.so.5 => /usr/lib/libQt5XcbQpa.so.5 (0x00007f730ea63000)
        	libQt5Gui.so.5 => /usr/lib/libQt5Gui.so.5 (0x00007f730e2d5000)
        	libQt5Core.so.5 => /usr/lib/libQt5Core.so.5 (0x00007f730dbd4000)
        	libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007f730d84b000)
        	libc.so.6 => /usr/lib/libc.so.6 (0x00007f730d48f000)
        	libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x00007f730d24c000)
        	libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x00007f730cf83000)
        	libQt5DBus.so.5 => /usr/lib/libQt5DBus.so.5 (0x00007f730ccf3000)
        	libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f730cad5000)
        	libX11-xcb.so.1 => /usr/lib/libX11-xcb.so.1 (0x00007f730c8d3000)
        	libX11.so.6 => /usr/lib/libX11.so.6 (0x00007f730c594000)
        	libXi.so.6 => /usr/lib/libXi.so.6 (0x00007f730c383000)
        	libSM.so.6 => /usr/lib/libSM.so.6 (0x00007f730c17b000)
        	libICE.so.6 => /usr/lib/libICE.so.6 (0x00007f730bf5f000)
        	libXrender.so.1 => /usr/lib/libXrender.so.1 (0x00007f730bd54000)
        	libxcb-xkb.so.1 => /usr/lib/libxcb-xkb.so.1 (0x00007f730bb37000)
        	libxcb-render-util.so.0 => /usr/lib/libxcb-render-util.so.0 (0x00007f730b933000)
        	libxcb-render.so.0 => /usr/lib/libxcb-render.so.0 (0x00007f730b725000)
        	libxcb-sync.so.1 => /usr/lib/libxcb-sync.so.1 (0x00007f730b51e000)
        	libxcb-xfixes.so.0 => /usr/lib/libxcb-xfixes.so.0 (0x00007f730b316000)
        	libxcb-xinerama.so.0 => /usr/lib/libxcb-xinerama.so.0 (0x00007f730b113000)
        	libxcb-randr.so.0 => /usr/lib/libxcb-randr.so.0 (0x00007f730af03000)
        	libxcb-image.so.0 => /usr/lib/libxcb-image.so.0 (0x00007f730acfe000)
        	libxcb-shm.so.0 => /usr/lib/libxcb-shm.so.0 (0x00007f730aafa000)
        	libxcb-keysyms.so.1 => /usr/lib/libxcb-keysyms.so.1 (0x00007f730a8f7000)
        	libxcb-icccm.so.4 => /usr/lib/libxcb-icccm.so.4 (0x00007f730a6f2000)
        	libxcb.so.1 => /usr/lib/libxcb.so.1 (0x00007f730a4c9000)
        	libxcb-shape.so.0 => /usr/lib/libxcb-shape.so.0 (0x00007f730a2c5000)
        	libxkbcommon.so.0 => /usr/lib/libxkbcommon.so.0 (0x00007f730a086000)
        	libxkbcommon-x11.so.0 => /usr/lib/libxkbcommon-x11.so.0 (0x00007f7309e7f000)
        	libm.so.6 => /usr/lib/libm.so.6 (0x00007f7309aea000)
        	libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007f73098d2000)
        	libGL.so.1 => /usr/lib/libGL.so.1 (0x00007f7309647000)
        	libpng16.so.16 => /usr/lib/libpng16.so.16 (0x00007f7309411000)
        	libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0x00007f7309165000)
        	libz.so.1 => /usr/lib/libz.so.1 (0x00007f7308f4e000)
        	libsystemd.so.0 => /usr/lib/libsystemd.so.0 (0x00007f7308cc4000)
        	libicui18n.so.61 => /usr/lib/libicui18n.so.61 (0x00007f7308819000)
        	libicuuc.so.61 => /usr/lib/libicuuc.so.61 (0x00007f730845f000)
        	libpcre2-16.so.0 => /usr/lib/libpcre2-16.so.0 (0x00007f73081e8000)
        	libdouble-conversion.so.1 => /usr/lib/libdouble-conversion.so.1 (0x00007f7307fd8000)
        	libdl.so.2 => /usr/lib/libdl.so.2 (0x00007f7307dd4000)
        	libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00007f7307abd000)
        	/usr/lib64/ld-linux-x86-64.so.2 (0x00007f730efdd000)
        	libexpat.so.1 => /usr/lib/libexpat.so.1 (0x00007f730788b000)
        	libuuid.so.1 => /usr/lib/libuuid.so.1 (0x00007f7307684000)
        	libbz2.so.1.0 => /usr/lib/libbz2.so.1.0 (0x00007f7307474000)
        	libdbus-1.so.3 => /usr/lib/libdbus-1.so.3 (0x00007f7307223000)
        	libXext.so.6 => /usr/lib/libXext.so.6 (0x00007f7307011000)
        	libXau.so.6 => /usr/lib/libXau.so.6 (0x00007f7306e0d000)
        	libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x00007f7306c07000)
        	libxcb-util.so.1 => /usr/lib/libxcb-util.so.1 (0x00007f7306a01000)
        	libGLX.so.0 => /usr/lib/libGLX.so.0 (0x00007f73067d0000)
        	libGLdispatch.so.0 => /usr/lib/libGLdispatch.so.0 (0x00007f730651a000)
        	libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0x00007f73062ee000)
        	librt.so.1 => /usr/lib/librt.so.1 (0x00007f73060e6000)
        	liblzma.so.5 => /usr/lib/liblzma.so.5 (0x00007f7305ec0000)
        	liblz4.so.1 => /usr/lib/liblz4.so.1 (0x00007f7305ca3000)
        	libgcrypt.so.20 => /usr/lib/libgcrypt.so.20 (0x00007f7305987000)
        	libicudata.so.61 => /usr/lib/libicudata.so.61 (0x00007f7303de2000)
        	libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007f7303b70000)
        	libgpg-error.so.0 => /usr/lib/libgpg-error.so.0 (0x00007f7303950000)
        ~ $ qtcreator
        QApplication: invalid style override passed, ignoring it.
        

        so it seems that reinstalling libxcb fixed the issue. So thank you very much guys.
        I own you really big beer :-)

        @SGaist
        there is no such thing on manjaro or archlinux which manjaro is baseed on

        D 1 Reply Last reply
        1
        • D Offline
          D Offline
          DevAlone
          wrote on last edited by
          #9

          For those who could face the same issue and didn't solve by reinstalling libxcb: in my case the message was the same but it was caused by apps inside lxc unabling to open display, so, try to run another GUI app like xclock.

          R 1 Reply Last reply
          2
          • D DevAlone

            For those who could face the same issue and didn't solve by reinstalling libxcb: in my case the message was the same but it was caused by apps inside lxc unabling to open display, so, try to run another GUI app like xclock.

            R Offline
            R Offline
            rrd0
            wrote on last edited by
            #10

            @DevAlone

            qt.qpa.xcb: could not connect to display <<-- Is that the message you're talking about?

            Could you explain a little better what was your problem and how did you fix it?

            What is lxc? And why to run another GUI app? I really didn't understand what you did to fix this problem.

            1 Reply Last reply
            0
            • J Offline
              J Offline
              jcren
              wrote on last edited by
              #11

              @twar
              Hi, twar!
              I met the same error as yours, and I cannot solve it after using several methods.
              Can you tell me how to fix it more clearly? I'm new to geant4, so I cannot understand what you have said.
              Thank you!

              Best Wishes,
              jcren.

              1 Reply Last reply
              0
              • E Offline
                E Offline
                Ezzaat
                wrote on last edited by
                #12

                Hi
                I faced this problem and I got a new version of linuxdeployqt and now that error is gone.

                1 Reply Last reply
                0
                • NyilasLaszloN Offline
                  NyilasLaszloN Offline
                  NyilasLaszlo
                  wrote on last edited by
                  #13

                  Hi for all!
                  I downloaded and extracted XnView MP version 0.96 on Arch Linux and same error happened.
                  Képernyőkép_2020-04-16_11-56-17.png

                  Solution:
                  I am deleted these two files: libfreetype.so and libfreetype.so.6 .
                  Képernyőkép_2020-04-16_11-57-29.png

                  Képernyőkép_2020-04-16_11-58-14.png

                  Here is the result:
                  Képernyőkép_2020-04-16_11-59-08.png

                  1 Reply Last reply
                  0
                  • J Offline
                    J Offline
                    jarvis
                    wrote on last edited by
                    #14

                    Hi ,
                    I am facing a similar issue could you please help.

                    Got keys from plugin meta data ("xcb")
                    QFactoryLoader::QFactoryLoader() checking directory path "/usr/bin/platforms" ...
                    QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqeglfs.so"
                    Got keys from plugin meta data ("eglfs")
                    QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqlinuxfb.so"
                    Got keys from plugin meta data ("linuxfb")
                    QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqminimal.so"
                    Got keys from plugin meta data ("minimal")
                    QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqminimalegl.so"
                    Got keys from plugin meta data ("minimalegl")
                    QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqoffscreen.so"
                    Got keys from plugin meta data ("offscreen")
                    QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqvnc.so"
                    Got keys from plugin meta data ("vnc")
                    QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqxcb.so"
                    Got keys from plugin meta data ("xcb")
                    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 "/opt/appname/libs/Qt/plugins/platforms" 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.

                    S 1 Reply Last reply
                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #15

                      @jarvis said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:

                      QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqminimalegl.so"
                      Got keys from plugin meta data ("minimalegl")
                      QFactoryLoader::QFactoryLoader() looking at "/usr/bin/platforms/libqoffscreen.so"
                      Got

                      Hi,

                      Start your application with the QT_DEBUG_PLUGINS environment variable set to 1 to get more information.

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                      ali-aydinA 1 Reply Last reply
                      0
                      • S Offline
                        S Offline
                        Srinivas Reddy
                        wrote on last edited by
                        #16

                        I am using Qt-5.15.0, got the same problem.
                        More details are:
                        QLibraryPrivate::loadPlugin failed on "/opt/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /opt/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)"

                        Solved by installing the dependent package.
                        Command to install: sudo apt-get install libxcb-xinerama0

                        J I O M C 11 Replies Last reply
                        20
                        • S Srinivas Reddy

                          I am using Qt-5.15.0, got the same problem.
                          More details are:
                          QLibraryPrivate::loadPlugin failed on "/opt/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /opt/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)"

                          Solved by installing the dependent package.
                          Command to install: sudo apt-get install libxcb-xinerama0

                          J Offline
                          J Offline
                          JamieC
                          wrote on last edited by
                          #17

                          Fresh install had the same issues reported here. Did what @Srinivas-Reddy suggested and install libxcb-xinerama0 and everything started working. Thanks!

                          P 1 Reply Last reply
                          2
                          • J JamieC

                            Fresh install had the same issues reported here. Did what @Srinivas-Reddy suggested and install libxcb-xinerama0 and everything started working. Thanks!

                            P Offline
                            P Offline
                            PabloC
                            wrote on last edited by
                            #18

                            @JamieC I had the same problem, install libxcb-xinerama0 and I solved it, Thanks!

                            1 Reply Last reply
                            10
                            • A Offline
                              A Offline
                              Advig
                              wrote on last edited by
                              #19

                              Tried reinstalling libxcb and worked for me as well.

                              J 1 Reply Last reply
                              1
                              • S Srinivas Reddy

                                I am using Qt-5.15.0, got the same problem.
                                More details are:
                                QLibraryPrivate::loadPlugin failed on "/opt/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so" : "Cannot load library /opt/Qt/5.15.0/gcc_64/plugins/platforms/libqxcb.so: (libxcb-xinerama.so.0: cannot open shared object file: No such file or directory)"

                                Solved by installing the dependent package.
                                Command to install: sudo apt-get install libxcb-xinerama0

                                I Offline
                                I Offline
                                inbdz
                                wrote on last edited by
                                #20

                                @Srinivas-Reddy many thanks

                                1 Reply Last reply
                                0
                                • L Offline
                                  L Offline
                                  Lengendary
                                  wrote on last edited by
                                  #21

                                  Thanks very much!
                                  I spent several hours trying to solve this problem until I got here.
                                  sudo apt-get install libxcb-xinerama0
                                  Thanks!

                                  A M R D 4 Replies Last reply
                                  10
                                  • L Lengendary

                                    Thanks very much!
                                    I spent several hours trying to solve this problem until I got here.
                                    sudo apt-get install libxcb-xinerama0
                                    Thanks!

                                    A Offline
                                    A Offline
                                    artyjeep
                                    wrote on last edited by
                                    #22

                                    @Lengendary Thank you!

                                    1 Reply Last reply
                                    0
                                    • S Offline
                                      S Offline
                                      singhravi
                                      wrote on last edited by
                                      #23

                                      Hey guys,

                                      I'm getting the same error but not able to find any reason.
                                      I'm building this project, https://github.com/BelledonneCommunications/linphone-desktop
                                      and getting the error,

                                      (linphone) ➜  Packages git:(master) ./Linphone-4.5.1.AppImage 
                                      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: xcb.
                                      
                                      [1]    28317 abort (core dumped)  ./Linphone-4.5.1.AppImage
                                      (linphone) ➜  Packages git:(master) ldd ~/Qt/5.12.9/gcc_64/plugins/platforms/libqxcb.so                         
                                      	linux-vdso.so.1 (0x00007ffe12cd8000)
                                      	libQt5XcbQpa.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5 (0x00007f79c2a18000)
                                      	libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f79c27d3000)
                                      	libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f79c251f000)
                                      	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f79c2302000)
                                      	libQt5Gui.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Gui.so.5 (0x00007f79c1ab3000)
                                      	libQt5DBus.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5DBus.so.5 (0x00007f79c1827000)
                                      	libQt5Core.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Core.so.5 (0x00007f79c108c000)
                                      	libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f79c0e00000)
                                      	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f79c0be1000)
                                      	libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f79c09df000)
                                      	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f79c07b7000)
                                      	libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f79c05ad000)
                                      	libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f79c039b000)
                                      	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f79c0063000)
                                      	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f79bfcc5000)
                                      	libxkbcommon-x11.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0 (0x00007f79bfabd000)
                                      	libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f79bf87e000)
                                      	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f79bf67a000)
                                      	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f79bf2f1000)
                                      	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f79bf0d9000)
                                      	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f79bece8000)
                                      	libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f79beae6000)
                                      	libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f79be7cf000)
                                      	libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f79be59d000)
                                      	libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f79be36b000)
                                      	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f79be11e000)
                                      	libicui18n.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicui18n.so.56 (0x00007f79bdc85000)
                                      	libicuuc.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicuuc.so.56 (0x00007f79bd8cd000)
                                      	libicudata.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicudata.so.56 (0x00007f79bbeea000)
                                      	/lib64/ld-linux-x86-64.so.2 (0x00007f79c2fbe000)
                                      	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f79bbcb9000)
                                      	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f79bba03000)
                                      	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f79bb7ff000)
                                      	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f79bb5f9000)
                                      	libxcb-xkb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-xkb.so.1 (0x00007f79bb3dd000)
                                      	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f79bb16b000)
                                      	libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f79baee7000)
                                      	libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f79bacd2000)
                                      	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f79baaca000)
                                      	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f79ba8a4000)
                                      	liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f79ba688000)
                                      	libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f79ba36c000)
                                      	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f79ba157000)
                                      

                                      What could be the issue? Please suggest.
                                      Please let me know if you need to know anything else for this.

                                      S 1 Reply Last reply
                                      0
                                      • S singhravi

                                        Hey guys,

                                        I'm getting the same error but not able to find any reason.
                                        I'm building this project, https://github.com/BelledonneCommunications/linphone-desktop
                                        and getting the error,

                                        (linphone) ➜  Packages git:(master) ./Linphone-4.5.1.AppImage 
                                        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: xcb.
                                        
                                        [1]    28317 abort (core dumped)  ./Linphone-4.5.1.AppImage
                                        (linphone) ➜  Packages git:(master) ldd ~/Qt/5.12.9/gcc_64/plugins/platforms/libqxcb.so                         
                                        	linux-vdso.so.1 (0x00007ffe12cd8000)
                                        	libQt5XcbQpa.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5 (0x00007f79c2a18000)
                                        	libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f79c27d3000)
                                        	libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f79c251f000)
                                        	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f79c2302000)
                                        	libQt5Gui.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Gui.so.5 (0x00007f79c1ab3000)
                                        	libQt5DBus.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5DBus.so.5 (0x00007f79c1827000)
                                        	libQt5Core.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Core.so.5 (0x00007f79c108c000)
                                        	libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f79c0e00000)
                                        	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f79c0be1000)
                                        	libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f79c09df000)
                                        	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f79c07b7000)
                                        	libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f79c05ad000)
                                        	libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f79c039b000)
                                        	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f79c0063000)
                                        	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f79bfcc5000)
                                        	libxkbcommon-x11.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0 (0x00007f79bfabd000)
                                        	libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f79bf87e000)
                                        	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f79bf67a000)
                                        	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f79bf2f1000)
                                        	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f79bf0d9000)
                                        	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f79bece8000)
                                        	libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f79beae6000)
                                        	libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f79be7cf000)
                                        	libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f79be59d000)
                                        	libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f79be36b000)
                                        	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f79be11e000)
                                        	libicui18n.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicui18n.so.56 (0x00007f79bdc85000)
                                        	libicuuc.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicuuc.so.56 (0x00007f79bd8cd000)
                                        	libicudata.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicudata.so.56 (0x00007f79bbeea000)
                                        	/lib64/ld-linux-x86-64.so.2 (0x00007f79c2fbe000)
                                        	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f79bbcb9000)
                                        	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f79bba03000)
                                        	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f79bb7ff000)
                                        	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f79bb5f9000)
                                        	libxcb-xkb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-xkb.so.1 (0x00007f79bb3dd000)
                                        	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f79bb16b000)
                                        	libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f79baee7000)
                                        	libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f79bacd2000)
                                        	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f79baaca000)
                                        	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f79ba8a4000)
                                        	liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f79ba688000)
                                        	libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f79ba36c000)
                                        	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f79ba157000)
                                        

                                        What could be the issue? Please suggest.
                                        Please let me know if you need to know anything else for this.

                                        S Offline
                                        S Offline
                                        singhravi
                                        wrote on last edited by
                                        #24

                                        @singhravi said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:

                                        Hey guys,

                                        I'm getting the same error but not able to find any reason.
                                        I'm building this project, https://github.com/BelledonneCommunications/linphone-desktop
                                        and getting the error,

                                        (linphone) ➜  Packages git:(master) ./Linphone-4.5.1.AppImage 
                                        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: xcb.
                                        
                                        [1]    28317 abort (core dumped)  ./Linphone-4.5.1.AppImage
                                        (linphone) ➜  Packages git:(master) ldd ~/Qt/5.12.9/gcc_64/plugins/platforms/libqxcb.so                         
                                        	linux-vdso.so.1 (0x00007ffe12cd8000)
                                        	libQt5XcbQpa.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5 (0x00007f79c2a18000)
                                        	libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f79c27d3000)
                                        	libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f79c251f000)
                                        	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f79c2302000)
                                        	libQt5Gui.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Gui.so.5 (0x00007f79c1ab3000)
                                        	libQt5DBus.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5DBus.so.5 (0x00007f79c1827000)
                                        	libQt5Core.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Core.so.5 (0x00007f79c108c000)
                                        	libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f79c0e00000)
                                        	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f79c0be1000)
                                        	libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f79c09df000)
                                        	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f79c07b7000)
                                        	libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f79c05ad000)
                                        	libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f79c039b000)
                                        	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f79c0063000)
                                        	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f79bfcc5000)
                                        	libxkbcommon-x11.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0 (0x00007f79bfabd000)
                                        	libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f79bf87e000)
                                        	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f79bf67a000)
                                        	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f79bf2f1000)
                                        	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f79bf0d9000)
                                        	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f79bece8000)
                                        	libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f79beae6000)
                                        	libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f79be7cf000)
                                        	libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f79be59d000)
                                        	libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f79be36b000)
                                        	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f79be11e000)
                                        	libicui18n.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicui18n.so.56 (0x00007f79bdc85000)
                                        	libicuuc.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicuuc.so.56 (0x00007f79bd8cd000)
                                        	libicudata.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicudata.so.56 (0x00007f79bbeea000)
                                        	/lib64/ld-linux-x86-64.so.2 (0x00007f79c2fbe000)
                                        	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f79bbcb9000)
                                        	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f79bba03000)
                                        	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f79bb7ff000)
                                        	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f79bb5f9000)
                                        	libxcb-xkb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-xkb.so.1 (0x00007f79bb3dd000)
                                        	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f79bb16b000)
                                        	libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f79baee7000)
                                        	libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f79bacd2000)
                                        	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f79baaca000)
                                        	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f79ba8a4000)
                                        	liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f79ba688000)
                                        	libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f79ba36c000)
                                        	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f79ba157000)
                                        

                                        What could be the issue? Please suggest.
                                        Please let me know if you need to know anything else for this.

                                        Hey @SGaist , Can you please suggest anything for this?

                                        SGaistS 1 Reply Last reply
                                        0
                                        • S singhravi

                                          @singhravi said in qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.:

                                          Hey guys,

                                          I'm getting the same error but not able to find any reason.
                                          I'm building this project, https://github.com/BelledonneCommunications/linphone-desktop
                                          and getting the error,

                                          (linphone) ➜  Packages git:(master) ./Linphone-4.5.1.AppImage 
                                          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: xcb.
                                          
                                          [1]    28317 abort (core dumped)  ./Linphone-4.5.1.AppImage
                                          (linphone) ➜  Packages git:(master) ldd ~/Qt/5.12.9/gcc_64/plugins/platforms/libqxcb.so                         
                                          	linux-vdso.so.1 (0x00007ffe12cd8000)
                                          	libQt5XcbQpa.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5XcbQpa.so.5 (0x00007f79c2a18000)
                                          	libfontconfig.so.1 => /usr/lib/x86_64-linux-gnu/libfontconfig.so.1 (0x00007f79c27d3000)
                                          	libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f79c251f000)
                                          	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f79c2302000)
                                          	libQt5Gui.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Gui.so.5 (0x00007f79c1ab3000)
                                          	libQt5DBus.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5DBus.so.5 (0x00007f79c1827000)
                                          	libQt5Core.so.5 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libQt5Core.so.5 (0x00007f79c108c000)
                                          	libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f79c0e00000)
                                          	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f79c0be1000)
                                          	libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f79c09df000)
                                          	libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f79c07b7000)
                                          	libXrender.so.1 => /usr/lib/x86_64-linux-gnu/libXrender.so.1 (0x00007f79c05ad000)
                                          	libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f79c039b000)
                                          	libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f79c0063000)
                                          	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f79bfcc5000)
                                          	libxkbcommon-x11.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0 (0x00007f79bfabd000)
                                          	libxkbcommon.so.0 => /usr/lib/x86_64-linux-gnu/libxkbcommon.so.0 (0x00007f79bf87e000)
                                          	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f79bf67a000)
                                          	libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f79bf2f1000)
                                          	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f79bf0d9000)
                                          	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f79bece8000)
                                          	libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f79beae6000)
                                          	libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f79be7cf000)
                                          	libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f79be59d000)
                                          	libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f79be36b000)
                                          	libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f79be11e000)
                                          	libicui18n.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicui18n.so.56 (0x00007f79bdc85000)
                                          	libicuuc.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicuuc.so.56 (0x00007f79bd8cd000)
                                          	libicudata.so.56 => /home/ravi/Qt/5.12.9/gcc_64/plugins/platforms/../../lib/libicudata.so.56 (0x00007f79bbeea000)
                                          	/lib64/ld-linux-x86-64.so.2 (0x00007f79c2fbe000)
                                          	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f79bbcb9000)
                                          	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f79bba03000)
                                          	libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f79bb7ff000)
                                          	libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f79bb5f9000)
                                          	libxcb-xkb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-xkb.so.1 (0x00007f79bb3dd000)
                                          	libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f79bb16b000)
                                          	libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f79baee7000)
                                          	libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f79bacd2000)
                                          	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f79baaca000)
                                          	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f79ba8a4000)
                                          	liblz4.so.1 => /usr/lib/x86_64-linux-gnu/liblz4.so.1 (0x00007f79ba688000)
                                          	libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f79ba36c000)
                                          	libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f79ba157000)
                                          

                                          What could be the issue? Please suggest.
                                          Please let me know if you need to know anything else for this.

                                          Hey @SGaist , Can you please suggest anything for this?

                                          SGaistS Offline
                                          SGaistS Offline
                                          SGaist
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #25

                                          @singhravi run ldd on the plugin itself.

                                          Interested in AI ? www.idiap.ch
                                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                          S 1 Reply Last reply
                                          0

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