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could not find qtplatfom plugin eglfs

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  • jsulmJ jsulm

    @Asha said in could not find qtplatfom plugin eglfs:

    /home/beagle does not exit on my device

    Well, that's the problem: only root has write access in /home.
    Why do you use /home/beagle if your user is debian?!
    Use /home/debian ...

    A Offline
    A Offline
    Asha
    wrote on last edited by
    #24

    @jsulm

    while giving the /home/debian

    here is the compile output:
    11:13:06: Running steps for project concentriccircles...
    11:13:06: Configuration unchanged, skipping qmake step.
    11:13:06: Starting: "/usr/bin/make" -j4
    make: Nothing to be done for 'first'.
    11:13:06: The process "/usr/bin/make" exited normally.
    11:13:06: The remote file system has 46 megabytes of free space, going ahead.
    11:13:06: Deploy step finished.
    11:13:06: Trying to kill "/home/debian/Qt5/concentriccircles" on remote device...
    11:13:08: Remote application killed.
    11:13:08: Deploy step finished.
    11:13:08: sending incremental file list

    11:13:08:
    sent 72 bytes received 12 bytes 168.00 bytes/sec
    total size is 1,576,416 speedup is 18,766.86

    11:13:08: Deploy step finished.
    11:13:08: Elapsed time: 00:03.

    And

    Application output is:

    11:13:09: Starting /home/debian/Qt5/concentriccircles ...
    qt.qpa.plugin: Could not find the Qt platform plugin "eglfs" in ""
    This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

    Available platform plugins are: linuxfb, minimal, offscreen, vnc.

    11:13:09: Remote process crashed.

    jsulmJ 1 Reply Last reply
    0
    • A Asha

      @jsulm

      while giving the /home/debian

      here is the compile output:
      11:13:06: Running steps for project concentriccircles...
      11:13:06: Configuration unchanged, skipping qmake step.
      11:13:06: Starting: "/usr/bin/make" -j4
      make: Nothing to be done for 'first'.
      11:13:06: The process "/usr/bin/make" exited normally.
      11:13:06: The remote file system has 46 megabytes of free space, going ahead.
      11:13:06: Deploy step finished.
      11:13:06: Trying to kill "/home/debian/Qt5/concentriccircles" on remote device...
      11:13:08: Remote application killed.
      11:13:08: Deploy step finished.
      11:13:08: sending incremental file list

      11:13:08:
      sent 72 bytes received 12 bytes 168.00 bytes/sec
      total size is 1,576,416 speedup is 18,766.86

      11:13:08: Deploy step finished.
      11:13:08: Elapsed time: 00:03.

      And

      Application output is:

      11:13:09: Starting /home/debian/Qt5/concentriccircles ...
      qt.qpa.plugin: Could not find the Qt platform plugin "eglfs" in ""
      This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

      Available platform plugins are: linuxfb, minimal, offscreen, vnc.

      11:13:09: Remote process crashed.

      jsulmJ Offline
      jsulmJ Offline
      jsulm
      Lifetime Qt Champion
      wrote on last edited by
      #25

      @Asha said in could not find qtplatfom plugin eglfs:

      linuxfb, minimal, offscreen, vnc

      Looks like you did not build eglfs support when building Qt

      https://forum.qt.io/topic/113070/qt-code-of-conduct

      A 1 Reply Last reply
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      • jsulmJ jsulm

        @Asha said in could not find qtplatfom plugin eglfs:

        linuxfb, minimal, offscreen, vnc

        Looks like you did not build eglfs support when building Qt

        A Offline
        A Offline
        Asha
        wrote on last edited by
        #26

        @jsulm
        but other platforms like linuxfb and vnc both are enabled while building qt,

        And I exported linuxfb in my device...

        one more ,while building I tried with -eglfs option also but got the error like

        ERROR: 'eglfs' already enabled...

        jsulmJ 1 Reply Last reply
        0
        • A Asha

          @jsulm
          but other platforms like linuxfb and vnc both are enabled while building qt,

          And I exported linuxfb in my device...

          one more ,while building I tried with -eglfs option also but got the error like

          ERROR: 'eglfs' already enabled...

          jsulmJ Offline
          jsulmJ Offline
          jsulm
          Lifetime Qt Champion
          wrote on last edited by
          #27

          @Asha What do you actually want to use? eglfs? linuxfb? ...?
          Adding -eglfs is not going to help as it is already activated, but your Qt build does not support it.

          https://forum.qt.io/topic/113070/qt-code-of-conduct

          A 1 Reply Last reply
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          • jsulmJ jsulm

            @Asha What do you actually want to use? eglfs? linuxfb? ...?
            Adding -eglfs is not going to help as it is already activated, but your Qt build does not support it.

            A Offline
            A Offline
            Asha
            wrote on last edited by
            #28

            @jsulm I just want to run one simple application in my device, by using anyone..

            jsulmJ 1 Reply Last reply
            0
            • A Asha

              @jsulm I just want to run one simple application in my device, by using anyone..

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #29

              @Asha Well, I think I already mentioned this once: you have to know what your device actually uses. Is it X11, eglfs, linuxfb, ...?

              https://forum.qt.io/topic/113070/qt-code-of-conduct

              A 1 Reply Last reply
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              • jsulmJ jsulm

                @Asha Well, I think I already mentioned this once: you have to know what your device actually uses. Is it X11, eglfs, linuxfb, ...?

                A Offline
                A Offline
                Asha
                wrote on last edited by
                #30

                @jsulm

                can you please tell me more about X11,or any link..what exactly it will do?

                jsulmJ 1 Reply Last reply
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                • A Asha

                  @jsulm

                  can you please tell me more about X11,or any link..what exactly it will do?

                  jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on last edited by
                  #31

                  @Asha Google knows https://en.wikipedia.org/wiki/X_Window_System

                  https://forum.qt.io/topic/113070/qt-code-of-conduct

                  A 1 Reply Last reply
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                  • jsulmJ jsulm

                    @Asha Google knows https://en.wikipedia.org/wiki/X_Window_System

                    A Offline
                    A Offline
                    Asha
                    wrote on last edited by
                    #32

                    @jsulm It means first i need to find which backend is running on my device ,based on that I need to cross compile the qt?

                    jsulmJ 1 Reply Last reply
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                    • A Asha

                      @jsulm It means first i need to find which backend is running on my device ,based on that I need to cross compile the qt?

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #33

                      @Asha said in could not find qtplatfom plugin eglfs:

                      i need to find which backend is running on my device

                      yes

                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                      A 1 Reply Last reply
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                      • jsulmJ jsulm

                        @Asha said in could not find qtplatfom plugin eglfs:

                        i need to find which backend is running on my device

                        yes

                        A Offline
                        A Offline
                        Asha
                        wrote on last edited by
                        #34

                        @jsulm after finding ,again i need to build ,cross compiled qt?

                        jsulmJ 1 Reply Last reply
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                        • A Asha

                          @jsulm after finding ,again i need to build ,cross compiled qt?

                          jsulmJ Offline
                          jsulmJ Offline
                          jsulm
                          Lifetime Qt Champion
                          wrote on last edited by
                          #35

                          @Asha If you did not cross compile needed platform plug-in then yes

                          https://forum.qt.io/topic/113070/qt-code-of-conduct

                          A 1 Reply Last reply
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                          • jsulmJ jsulm

                            @Asha If you did not cross compile needed platform plug-in then yes

                            A Offline
                            A Offline
                            Asha
                            wrote on last edited by
                            #36

                            @jsulm Hi,

                            I flashed my board with debian image...any idea which plugin is running on that image...

                            I got the answer ,we are using linux backend...

                            1 Reply Last reply
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                            • A Offline
                              A Offline
                              Asha
                              wrote on last edited by
                              #37

                              for eglfs plugin ,which packages are required and how to install those?

                              jsulmJ 1 Reply Last reply
                              0
                              • A Asha

                                for eglfs plugin ,which packages are required and how to install those?

                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by
                                #38

                                @Asha Please take a look at https://doc.qt.io/qt-5/embedded-linux.html
                                "we are using linux backend" - which one?

                                https://forum.qt.io/topic/113070/qt-code-of-conduct

                                A 1 Reply Last reply
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                                • jsulmJ jsulm

                                  @Asha Please take a look at https://doc.qt.io/qt-5/embedded-linux.html
                                  "we are using linux backend" - which one?

                                  A Offline
                                  A Offline
                                  Asha
                                  wrote on last edited by
                                  #39

                                  @jsulm I asked,which backend is running on board?

                                  got the ans:linux

                                  shall I ask more about backend or any link?

                                  jsulmJ 1 Reply Last reply
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                                  • A Asha

                                    @jsulm I asked,which backend is running on board?

                                    got the ans:linux

                                    shall I ask more about backend or any link?

                                    jsulmJ Offline
                                    jsulmJ Offline
                                    jsulm
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #40

                                    @Asha We know from the beginning that the OS is Linux. Linux is an operating system supporting different technologies for graphics, like: X11, directfb, eglfs, ...
                                    These technologies is what is called "backends" in Qt.

                                    https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    A 1 Reply Last reply
                                    0
                                    • jsulmJ jsulm

                                      @Asha We know from the beginning that the OS is Linux. Linux is an operating system supporting different technologies for graphics, like: X11, directfb, eglfs, ...
                                      These technologies is what is called "backends" in Qt.

                                      A Offline
                                      A Offline
                                      Asha
                                      wrote on last edited by
                                      #41

                                      @jsulm Hi ,Thank you for you guide...

                                      I found which plugin is running on my board,
                                      That is eglfs only,

                                      with this link https://doc.qt.io/qt-5/embedded-linux.html

                                      for beagleboneboard my build directory is Qt5,

                                      I got the information in the folder below

                                      cd /home/beagle/Qt5/mkspecs/devices/linux-beagleboard-g++/qmake.conf

                                      in qmake.conf file

                                      QT_QPA_DEFAULT_PLATFORM = eglfs

                                      so now,how to proceed next?

                                      can i change the QT_QPA_DEFAULT_PLATFORM in that file ?

                                      or need to configure with eglfs only?

                                      jsulmJ 1 Reply Last reply
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                                      • A Asha

                                        @jsulm Hi ,Thank you for you guide...

                                        I found which plugin is running on my board,
                                        That is eglfs only,

                                        with this link https://doc.qt.io/qt-5/embedded-linux.html

                                        for beagleboneboard my build directory is Qt5,

                                        I got the information in the folder below

                                        cd /home/beagle/Qt5/mkspecs/devices/linux-beagleboard-g++/qmake.conf

                                        in qmake.conf file

                                        QT_QPA_DEFAULT_PLATFORM = eglfs

                                        so now,how to proceed next?

                                        can i change the QT_QPA_DEFAULT_PLATFORM in that file ?

                                        or need to configure with eglfs only?

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #42

                                        @Asha What did configure say about eglfs? Was it activated?

                                        https://forum.qt.io/topic/113070/qt-code-of-conduct

                                        A 1 Reply Last reply
                                        0
                                        • jsulmJ jsulm

                                          @Asha What did configure say about eglfs? Was it activated?

                                          A Offline
                                          A Offline
                                          Asha
                                          wrote on last edited by
                                          #43

                                          @jsulm I gone through this link,https://doc.qt.io/qt-5.12/embedded-linux.html

                                          please go through the selected paragraph in the below screenshot,eglfs.png
                                          in the mentioned the path i got it(dont no its currect or not just guessed)

                                          jsulmJ 1 Reply Last reply
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