Qt OpenCV application doesn't run on Raspberry Pi display












0















I have built a Qt application in C++ that utilizes OpenCV and runs on a Raspberry Pi. For some reason I cannot get this application to run directly on the Raspberry Pi's display.



The application runs fine if I send the display to a remote xserver, but if I try and run it and display it on the xserver running on the Pi I get the following errors:



libEGL warning: DRI2: failed to authenticate

qt5ct: using qt5ct plugin



** (LCVTrial_CppOpenCV:1914): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files



(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkWidget'



(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed



(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkBuildable'



(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE (interface_type)' failed



(LCVTrial_CppOpenCV:1914): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed



(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed



(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_register_static: assertion 'parent_type > 0' failed


No errors are shown when running to a remote display.



I made a "stripped down" version of the application with only the GUI, removing OpenCV, and it runs fine on the Pi's display.



Any ideas or direction on where to look / investigate would be appreciated!






c++ qt opencv raspberry-pi







share|improve this question



























    0















    I have built a Qt application in C++ that utilizes OpenCV and runs on a Raspberry Pi. For some reason I cannot get this application to run directly on the Raspberry Pi's display.



    The application runs fine if I send the display to a remote xserver, but if I try and run it and display it on the xserver running on the Pi I get the following errors:



    libEGL warning: DRI2: failed to authenticate
    
qt5ct: using qt5ct plugin
    

    
** (LCVTrial_CppOpenCV:1914): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
    

    
(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkWidget'
    

    
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
    

    
(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkBuildable'
    

    
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE (interface_type)' failed
    

    
(LCVTrial_CppOpenCV:1914): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed
    

    
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
    

    
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_register_static: assertion 'parent_type > 0' failed


    No errors are shown when running to a remote display.



    I made a "stripped down" version of the application with only the GUI, removing OpenCV, and it runs fine on the Pi's display.



    Any ideas or direction on where to look / investigate would be appreciated!






    c++ qt opencv raspberry-pi







    share|improve this question

























      0












      0








      0








      I have built a Qt application in C++ that utilizes OpenCV and runs on a Raspberry Pi. For some reason I cannot get this application to run directly on the Raspberry Pi's display.



      The application runs fine if I send the display to a remote xserver, but if I try and run it and display it on the xserver running on the Pi I get the following errors:



      libEGL warning: DRI2: failed to authenticate
      
qt5ct: using qt5ct plugin
      

      
** (LCVTrial_CppOpenCV:1914): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkWidget'
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkBuildable'
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE (interface_type)' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_register_static: assertion 'parent_type > 0' failed


      No errors are shown when running to a remote display.



      I made a "stripped down" version of the application with only the GUI, removing OpenCV, and it runs fine on the Pi's display.



      Any ideas or direction on where to look / investigate would be appreciated!






      c++ qt opencv raspberry-pi







      share|improve this question














      I have built a Qt application in C++ that utilizes OpenCV and runs on a Raspberry Pi. For some reason I cannot get this application to run directly on the Raspberry Pi's display.



      The application runs fine if I send the display to a remote xserver, but if I try and run it and display it on the xserver running on the Pi I get the following errors:



      libEGL warning: DRI2: failed to authenticate
      
qt5ct: using qt5ct plugin
      

      
** (LCVTrial_CppOpenCV:1914): WARNING **: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkWidget'
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-WARNING **: cannot register existing type 'GtkBuildable'
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_interface_add_prerequisite: assertion 'G_TYPE_IS_INTERFACE (interface_type)' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertion 'G_TYPE_IS_INSTANTIATABLE (instance_type)' failed
      

      
(LCVTrial_CppOpenCV:1914): GLib-GObject-CRITICAL **: g_type_register_static: assertion 'parent_type > 0' failed


      No errors are shown when running to a remote display.



      I made a "stripped down" version of the application with only the GUI, removing OpenCV, and it runs fine on the Pi's display.



      Any ideas or direction on where to look / investigate would be appreciated!






      c++ qt opencv raspberry-pi




      c++ qt opencv raspberry-pi






      share|improve this question













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      asked Nov 20 '18 at 1:16









      GafferMan2112GafferMan2112

      550148




      550148
























          1 Answer
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          0














          there are some missing libs on Raspi
          try on raspi terminal



          sudo apt-get install at-spi2-core


          in /etc/environment add



          QT_QPA_PLATFORMTHEME=gtk2


          and do not forget update gstreamer



          Hope it helps






          share|improve this answer
























          • I tried that. It got rid of the "qt5ct" message and the DBus warning, but all the other errors still come up and the application hangs. Also now, adding the gtk2 setting in /etc/environments makes it so I can't even run the application on the remote xserver. I get all the WARNING and CRITICAL errors from above along with "libGL error: No matching fbConfigs or visuals found" and "libGL error: failed to load driver: swrast".

            – GafferMan2112
            Nov 20 '18 at 20:38













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          0














          there are some missing libs on Raspi
          try on raspi terminal



          sudo apt-get install at-spi2-core


          in /etc/environment add



          QT_QPA_PLATFORMTHEME=gtk2


          and do not forget update gstreamer



          Hope it helps






          share|improve this answer
























          • I tried that. It got rid of the "qt5ct" message and the DBus warning, but all the other errors still come up and the application hangs. Also now, adding the gtk2 setting in /etc/environments makes it so I can't even run the application on the remote xserver. I get all the WARNING and CRITICAL errors from above along with "libGL error: No matching fbConfigs or visuals found" and "libGL error: failed to load driver: swrast".

            – GafferMan2112
            Nov 20 '18 at 20:38


















          0














          there are some missing libs on Raspi
          try on raspi terminal



          sudo apt-get install at-spi2-core


          in /etc/environment add



          QT_QPA_PLATFORMTHEME=gtk2


          and do not forget update gstreamer



          Hope it helps






          share|improve this answer
























          • I tried that. It got rid of the "qt5ct" message and the DBus warning, but all the other errors still come up and the application hangs. Also now, adding the gtk2 setting in /etc/environments makes it so I can't even run the application on the remote xserver. I get all the WARNING and CRITICAL errors from above along with "libGL error: No matching fbConfigs or visuals found" and "libGL error: failed to load driver: swrast".

            – GafferMan2112
            Nov 20 '18 at 20:38
















          0












          0








          0







          there are some missing libs on Raspi
          try on raspi terminal



          sudo apt-get install at-spi2-core


          in /etc/environment add



          QT_QPA_PLATFORMTHEME=gtk2


          and do not forget update gstreamer



          Hope it helps






          share|improve this answer













          there are some missing libs on Raspi
          try on raspi terminal



          sudo apt-get install at-spi2-core


          in /etc/environment add



          QT_QPA_PLATFORMTHEME=gtk2


          and do not forget update gstreamer



          Hope it helps







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 20 '18 at 8:53









          KeremKerem

          5511




          5511













          • I tried that. It got rid of the "qt5ct" message and the DBus warning, but all the other errors still come up and the application hangs. Also now, adding the gtk2 setting in /etc/environments makes it so I can't even run the application on the remote xserver. I get all the WARNING and CRITICAL errors from above along with "libGL error: No matching fbConfigs or visuals found" and "libGL error: failed to load driver: swrast".

            – GafferMan2112
            Nov 20 '18 at 20:38





















          • I tried that. It got rid of the "qt5ct" message and the DBus warning, but all the other errors still come up and the application hangs. Also now, adding the gtk2 setting in /etc/environments makes it so I can't even run the application on the remote xserver. I get all the WARNING and CRITICAL errors from above along with "libGL error: No matching fbConfigs or visuals found" and "libGL error: failed to load driver: swrast".

            – GafferMan2112
            Nov 20 '18 at 20:38



















          I tried that. It got rid of the "qt5ct" message and the DBus warning, but all the other errors still come up and the application hangs. Also now, adding the gtk2 setting in /etc/environments makes it so I can't even run the application on the remote xserver. I get all the WARNING and CRITICAL errors from above along with "libGL error: No matching fbConfigs or visuals found" and "libGL error: failed to load driver: swrast".

          – GafferMan2112
          Nov 20 '18 at 20:38







          I tried that. It got rid of the "qt5ct" message and the DBus warning, but all the other errors still come up and the application hangs. Also now, adding the gtk2 setting in /etc/environments makes it so I can't even run the application on the remote xserver. I get all the WARNING and CRITICAL errors from above along with "libGL error: No matching fbConfigs or visuals found" and "libGL error: failed to load driver: swrast".

          – GafferMan2112
          Nov 20 '18 at 20:38






















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