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Linux build qt.glx problem

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  • B Offline
    B Offline
    Bremenpl
    wrote on last edited by Bremenpl
    #1

    Hello There,
    I am writing a Qt + QML based application. I intend to use it on Windows and Linux OS's. While the program closes correctly on Windows build with code 0 (MinGw x64), when testing the same code on Linux, I get the following runtime errors when closing the app:

    qt.glx: qglx_findConfig: Failed to finding matching FBConfig (8 8 8 8)
    qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 8 8 8)
    qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 8 8)
    qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
    qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
    qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
    qt.glx: qglx_findConfig: Failed to finding matching FBConfig (1 1 1 8)
    13:37:36: The program has unexpectedly finished.
    

    I was wondering what could be the case here. The Qt version I am using is 5.12.3. I havent experienced this before updating from 5.11.1.

    I am not posting any code snippets, as the program is quite big. I can post the desired parts if needed though. But maybe someone experienced something similar in the past and could point me in a direction for searching for the problem.

    I would appreciate all feedback.

    lprzenioslo.zut.edu.pl

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    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      What Linux distribution are you using ?
      Are you doing anything OpenGL in your application ?

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

      B 1 Reply Last reply
      1
      • SGaistS SGaist

        Hi,

        What Linux distribution are you using ?
        Are you doing anything OpenGL in your application ?

        B Offline
        B Offline
        Bremenpl
        wrote on last edited by
        #3

        @SGaist Hi,
        I am using Ubuntu 18.04. I am not using opengl in the code.

        lprzenioslo.zut.edu.pl

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        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          What graphic stack do you have on your machine ?

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

          B 1 Reply Last reply
          0
          • SGaistS SGaist

            What graphic stack do you have on your machine ?

            B Offline
            B Offline
            Bremenpl
            wrote on last edited by Bremenpl
            #5

            @SGaist I am using a virtualized system (virtualbox).

            lprzenioslo.zut.edu.pl

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            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #6

              So a virtualbox running Ubuntu 18.04 ?
              Did you activate 3D acceleration ?
              What is your host OS ?

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

              B 1 Reply Last reply
              0
              • SGaistS SGaist

                So a virtualbox running Ubuntu 18.04 ?
                Did you activate 3D acceleration ?
                What is your host OS ?

                B Offline
                B Offline
                Bremenpl
                wrote on last edited by
                #7

                @SGaist yes, 3D acceleration is on. My host is windows 10.

                lprzenioslo.zut.edu.pl

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                • SGaistS Offline
                  SGaistS Offline
                  SGaist
                  Lifetime Qt Champion
                  wrote on last edited by
                  #8

                  Wait, it's on your Linux that it is failing. What graphics card do you have ?

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

                  B 2 Replies Last reply
                  0
                  • SGaistS SGaist

                    Wait, it's on your Linux that it is failing. What graphics card do you have ?

                    B Offline
                    B Offline
                    Bremenpl
                    wrote on last edited by
                    #9

                    @SGaist 2 graphics cards: intel integrated (the one that comes with i7-8750H) and Radeon Pro WX 7100. I think VB uses the second one, will doublecl check tommorow.

                    lprzenioslo.zut.edu.pl

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                    0
                    • SGaistS SGaist

                      Wait, it's on your Linux that it is failing. What graphics card do you have ?

                      B Offline
                      B Offline
                      Bremenpl
                      wrote on last edited by
                      #10

                      @SGaist Hi, I have noticed that when I turn off 3d acceleration in the VM, the messages dispensary, but the app crashes as before on shutdown...

                      lprzenioslo.zut.edu.pl

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                      • J Offline
                        J Offline
                        jars121
                        wrote on last edited by
                        #11

                        Any chance you were able to resolve this @Bremenpl ? I've got exactly the same issue under exactly the same circumstances (Ubuntu 18.04 under VirtualBox in Windows 10, running Qt 5.12.3).

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                        • B Offline
                          B Offline
                          Bremenpl
                          wrote on last edited by
                          #12

                          @jars121 unfortunetally not. I am still dealing with this bug in qt 5.13 (android build also crashes).

                          lprzenioslo.zut.edu.pl

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                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #13

                            Can you post the stack trace of the crash ?

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

                            B 1 Reply Last reply
                            0
                            • B Offline
                              B Offline
                              Bremenpl
                              wrote on last edited by Bremenpl
                              #14

                              @sgaist Hi, sorry for late answer- do you mean a screenshot from the call stack in debug view?

                              Ps: mac os build crashes the same way, havent tested only ios build yet.

                              lprzenioslo.zut.edu.pl

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                              • SGaistS SGaist

                                Can you post the stack trace of the crash ?

                                B Offline
                                B Offline
                                Bremenpl
                                wrote on last edited by
                                #15

                                @sgaist Here is the call stack along with the segfault moment in code (VB Ubuntu 18.04 x64):

                                0_1566405313872_VirtualBox_Lubuntu 18.04 amd64_21_08_2019_18_31_58.png

                                Seems like the problem lies somewhere within the Qt OPCUA code.

                                lprzenioslo.zut.edu.pl

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                                • SGaistS Offline
                                  SGaistS Offline
                                  SGaist
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #16

                                  Do you have the same stack trace on macOS ?

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

                                  B 1 Reply Last reply
                                  0
                                  • SGaistS SGaist

                                    Do you have the same stack trace on macOS ?

                                    B Offline
                                    B Offline
                                    Bremenpl
                                    wrote on last edited by
                                    #17

                                    @sgaist Its pretty much the same I think:

                                    0_1566465068925_97941aa9-4077-4216-994d-023fcd6ac185-Screen Shot 2019-08-22 at 11.10.40.png Screen Shot 2019-08-22 at 11.10.40

                                    lprzenioslo.zut.edu.pl

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                                    • SGaistS Offline
                                      SGaistS Offline
                                      SGaist
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #18

                                      Can you test again with the latest Qt 5.13 ?
                                      There's also going to be a release of Qt 5.12.5 if not already.

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

                                      B 1 Reply Last reply
                                      0
                                      • SGaistS SGaist

                                        Can you test again with the latest Qt 5.13 ?
                                        There's also going to be a release of Qt 5.12.5 if not already.

                                        B Offline
                                        B Offline
                                        Bremenpl
                                        wrote on last edited by
                                        #19

                                        @sgaist Hi, just FYI- yje iOS build works without problems, like Windows build (exits with code 0).
                                        I am currently using 5.13.0. Did you mean to update to the latest 5.13.2?

                                        lprzenioslo.zut.edu.pl

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