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could not find qtplatfom plugin eglfs

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  • A Asha

    @jsulm

    rsync -avz debian@192.168.7.2:/usr sysroot

    Here,I am synchronizing the sysroot from board to computer,

    so,Home directory to the user means ,I need to give like this
    rsync -avz debian@192.168.7.2:/usr /home/beagle/BBB/sysroot

    OR

    rsync -avz debian@192.168.7.2:/usr /home/beagle

    jsulmJ Offline
    jsulmJ Offline
    jsulm
    Lifetime Qt Champion
    wrote on last edited by
    #15

    @Asha said in could not find qtplatfom plugin eglfs:

    rsync -avz debian@192.168.7.2:/usr /home/beagle/BBB/sysroot
    OR
    rsync -avz debian@192.168.7.2:/usr /home/beagle

    Well, if you use /home/beagle you will pollute your home directory with the sysroot content, so use /home/beagle/BBB/sysroot ...

    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:

      rsync -avz debian@192.168.7.2:/usr /home/beagle/BBB/sysroot
      OR
      rsync -avz debian@192.168.7.2:/usr /home/beagle

      Well, if you use /home/beagle you will pollute your home directory with the sysroot content, so use /home/beagle/BBB/sysroot ...

      A Offline
      A Offline
      Asha
      wrote on last edited by
      #16

      @jsulm Hi,

      After giving this,getting the same error,there is no changes..

      1 Reply Last reply
      0
      • K Ketank16

        Even if you don't have the Qt folder on beaglebone at same location, you can export the following environment variables on BBB and be able to run your Qt application in it.

        export QT_QPA_PLATFORM_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins/platforms
        export LD_LIBRARY_PATH="/home/debian/(Qt folder name)/lib":$LD_LIBRARY_PATH
        export QT_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins
        export QT_QPA_FONTDIR=/home/debian/(Qt folder name)/lib/fonts
        

        Main thing you need to check is do you have eglfs as platform in the first place? Because I'm working on a BBB myself, and my application isn't in critical need of eglfs, but normally with BBB sysroot and linaro toolchain combo, you don't get eglfs working. You should check the path /home/debian/(Qt folder name)/plugins/platforms before using any app whether you have a library for eglfs there. If you do, then the commands above will point the Qt application to right folder and it will detect eglfs as platform plugin.

        A Offline
        A Offline
        Asha
        wrote on last edited by
        #17

        @Ketank16 Hi,

        can you please show me the, any .pro file,

        I am very confused with this target.path file..

        I followed this..target.png

        here is my .pro filetarget.pro.png

        what i gave target.path, is it correct?

        if its correct I am getting the error as shown in screenshot,

        for that error solution ,I gave all the rights(rwx) to the /home/beagle/Qt5.13.1 directory then also getting the same error,any suggestions please....

        1 Reply Last reply
        0
        • A Offline
          A Offline
          Asha
          wrote on last edited by
          #18

          Hi,

          Any ideas?

          Pablo J. RoginaP 1 Reply Last reply
          0
          • A Asha

            Hi,

            Any ideas?

            Pablo J. RoginaP Offline
            Pablo J. RoginaP Offline
            Pablo J. Rogina
            wrote on last edited by
            #19

            @Asha I think the problem is the $$[Qt5] placeholder in the value for target.path variable in your .pro
            what if you just make it simple as target.path=/home/beagle/Qt5.13.1

            PS: please STOP pasting pictures and just paste TEXT so it's easier for others to reference your posts...

            Upvote the answer(s) that helped you solve the issue
            Use "Topic Tools" button to mark your post as Solved
            Add screenshots via postimage.org
            Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

            A 1 Reply Last reply
            1
            • Pablo J. RoginaP Pablo J. Rogina

              @Asha I think the problem is the $$[Qt5] placeholder in the value for target.path variable in your .pro
              what if you just make it simple as target.path=/home/beagle/Qt5.13.1

              PS: please STOP pasting pictures and just paste TEXT so it's easier for others to reference your posts...

              A Offline
              A Offline
              Asha
              wrote on last edited by
              #20

              @Pablo-J-Rogina

              Good morning ,

              Thanks for the replay,

              After giving /home/beagle/Qt5.13.1 in my .pro file also getting the same problem...

              Here is the compile output:

              10:22:04: Running steps for project concentriccircles...
              10:22:04: Configuration unchanged, skipping qmake step.
              10:22:04: Starting: "/usr/bin/make" -j4
              make: Nothing to be done for 'first'.
              10:22:04: The process "/usr/bin/make" exited normally.
              10:22:04: Connecting to device "Generic Linux Device" (192.168.7.2).
              10:22:08: The remote file system has 49 megabytes of free space, going ahead.
              10:22:08: Deploy step finished.
              10:22:08: Trying to kill "/home/beagle/Qt5.13.1/concentriccircles" on remote device...
              10:22:11: Remote application killed.
              10:22:11: Deploy step finished.
              10:22:11: Failed to create remote directories: mkdir: cannot create directory ‘/home/beagle’: Permission denied

              10:22:11: Deploy step failed.
              Error while building/deploying project concentriccircles (kit: BBB)
              When executing step "Deploy files via rsync"
              10:22:11: Elapsed time: 00:07.

              jsulmJ 1 Reply Last reply
              0
              • A Asha

                @Pablo-J-Rogina

                Good morning ,

                Thanks for the replay,

                After giving /home/beagle/Qt5.13.1 in my .pro file also getting the same problem...

                Here is the compile output:

                10:22:04: Running steps for project concentriccircles...
                10:22:04: Configuration unchanged, skipping qmake step.
                10:22:04: Starting: "/usr/bin/make" -j4
                make: Nothing to be done for 'first'.
                10:22:04: The process "/usr/bin/make" exited normally.
                10:22:04: Connecting to device "Generic Linux Device" (192.168.7.2).
                10:22:08: The remote file system has 49 megabytes of free space, going ahead.
                10:22:08: Deploy step finished.
                10:22:08: Trying to kill "/home/beagle/Qt5.13.1/concentriccircles" on remote device...
                10:22:11: Remote application killed.
                10:22:11: Deploy step finished.
                10:22:11: Failed to create remote directories: mkdir: cannot create directory ‘/home/beagle’: Permission denied

                10:22:11: Deploy step failed.
                Error while building/deploying project concentriccircles (kit: BBB)
                When executing step "Deploy files via rsync"
                10:22:11: Elapsed time: 00:07.

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #21

                @Asha Does /home/beagle directory exist on your device?

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

                A 1 Reply Last reply
                0
                • jsulmJ jsulm

                  @Asha Does /home/beagle directory exist on your device?

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

                  @jsulm

                  /home/beagle does not exit on my device,
                  I installed Qt in my laptop(location is: /home/beagle/Qt5.13.1)

                  I copied the cross compiled qt in my device(location is : /home/debian/Qt5),

                  one more thing,I want to tell

                  my user password is :1234

                  I am trying to connect ssh via root,but giving the password 1234 ,I am not able to connect with my board ,getting the permission denied error,

                  but giving the password "ims1" ,I am able to login via root,
                  where "ims1" is my old user password ,is this may cause any issues?

                  jsulmJ 1 Reply Last reply
                  0
                  • A Asha

                    @jsulm

                    /home/beagle does not exit on my device,
                    I installed Qt in my laptop(location is: /home/beagle/Qt5.13.1)

                    I copied the cross compiled qt in my device(location is : /home/debian/Qt5),

                    one more thing,I want to tell

                    my user password is :1234

                    I am trying to connect ssh via root,but giving the password 1234 ,I am not able to connect with my board ,getting the permission denied error,

                    but giving the password "ims1" ,I am able to login via root,
                    where "ims1" is my old user password ,is this may cause any issues?

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #23

                    @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 ...

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

                    A 1 Reply Last reply
                    0
                    • 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
                        0
                        • 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
                            0
                            • 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
                                0
                                • 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
                                  0
                                  • 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
                                    0
                                    • 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
                                      0
                                      • 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
                                        0
                                        • 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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