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QComboBox selection makes computer crash

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  • ? Offline
    ? Offline
    A Former User
    wrote on last edited by
    #10

    I have also same problem using Qt6 6.4.2. I am waiting for a solution. I don't want to migrate Qt5 because of this problem.

    JoeCFDJ 1 Reply Last reply
    1
    • ? A Former User

      I have also same problem using Qt6 6.4.2. I am waiting for a solution. I don't want to migrate Qt5 because of this problem.

      JoeCFDJ Offline
      JoeCFDJ Offline
      JoeCFD
      wrote on last edited by
      #11

      @Dogukan-Arat I tested the /widgets/painting/basicdrawing example which has a few combo boxes and do not see any crash.
      Qt 6.5.0 and LUbuntu 22.04

      JonBJ 1 Reply Last reply
      0
      • JoeCFDJ JoeCFD

        @Dogukan-Arat I tested the /widgets/painting/basicdrawing example which has a few combo boxes and do not see any crash.
        Qt 6.5.0 and LUbuntu 22.04

        JonBJ Offline
        JonBJ Offline
        JonB
        wrote on last edited by
        #12

        @JoeCFD
        I seem to remember some recent post on something "similar" to this may have stated that Lubuntu worked but Ubuntu did not?

        JoeCFDJ 1 Reply Last reply
        0
        • JonBJ JonB

          @JoeCFD
          I seem to remember some recent post on something "similar" to this may have stated that Lubuntu worked but Ubuntu did not?

          JoeCFDJ Offline
          JoeCFDJ Offline
          JoeCFD
          wrote on last edited by
          #13

          @JonB I will check it out later.

          JoeCFDJ 1 Reply Last reply
          0
          • JoeCFDJ JoeCFD

            @JonB I will check it out later.

            JoeCFDJ Offline
            JoeCFDJ Offline
            JoeCFD
            wrote on last edited by JoeCFD
            #14

            @JoeCFD Tried the same example on Qt 6.4.0 and Ubuntu 22.04. No crash.

            1 Reply Last reply
            1
            • I Offline
              I Offline
              iPriyonto
              wrote on last edited by
              #15

              I am having the same problem too. However, in my case, it crashes only when I have the combo box open, and I try to interact with other widgets I have on the window.

              1 Reply Last reply
              1
              • M Offline
                M Offline
                Mriv31
                wrote on last edited by
                #16

                Same problem.

                Ubuntu 22.04 LTS - Wayland
                PyQt6 6.5.0

                1 Reply Last reply
                0
                • L Offline
                  L Offline
                  Li Kui
                  wrote on last edited by
                  #17

                  同样的问题,VMware,Ubuntu-22.04.2,Qt6.5

                  1 Reply Last reply
                  0
                  • BosGemilerB Offline
                    BosGemilerB Offline
                    BosGemiler
                    wrote on last edited by
                    #18

                    I have same issue. When I clicked on combobox, I can see dropdown menu, and everything is fine so far. But when I click on any item in dropdown menu, there appears a crash and I find myself on log in page of ubuntu.

                    It's not the only bug I faced in ubuntu. There are many others too. Unfortunately, I didn't see any good release of Ubuntu except Ubuntu 14 and 18.

                    Goodbye Ubuntu, Welcome Debian !

                    JoeCFDJ 1 Reply Last reply
                    0
                    • BosGemilerB BosGemiler

                      I have same issue. When I clicked on combobox, I can see dropdown menu, and everything is fine so far. But when I click on any item in dropdown menu, there appears a crash and I find myself on log in page of ubuntu.

                      It's not the only bug I faced in ubuntu. There are many others too. Unfortunately, I didn't see any good release of Ubuntu except Ubuntu 14 and 18.

                      Goodbye Ubuntu, Welcome Debian !

                      JoeCFDJ Offline
                      JoeCFDJ Offline
                      JoeCFD
                      wrote on last edited by JoeCFD
                      #19

                      @BosGemiler It could be a wayland related issue. Switch to Xorg and try it again.
                      On Login screen, there is a setting icon and click it to switch to Xorg. The default on Ubuntu now is Wayland.

                      1 Reply Last reply
                      1
                      • D Offline
                        D Offline
                        default
                        wrote on last edited by
                        #20

                        I faced the same issue while working with PyQt6 on Ubuntu 22.04

                        So I ran the following minimal example:-

                        from PyQt6.QtWidgets import (
                          QApplication,
                          QWidget,
                          QComboBox,
                        )
                        
                        import sys
                        
                        
                        class Window(QWidget):
                          def __init__(self):
                            super().__init__()
                        
                            combobox = QComboBox(self)
                            combobox.addItems(['option 1', 'option 2', 'option 3'])
                        
                            self.setGeometry(0,0,500,500)
                            self.setWindowTitle('Combobox Bug')
                            self.show()
                        
                        
                        if __name__ == '__main__':
                          app = QApplication([])
                          window = Window()
                          sys.exit(app.exec())
                        

                        Wayland : It crashes and I am sent to login screen where I have to login again.
                        Xorg: No crash

                        Same thing happens on PySide6.

                        JoeCFDJ 1 Reply Last reply
                        0
                        • D default

                          I faced the same issue while working with PyQt6 on Ubuntu 22.04

                          So I ran the following minimal example:-

                          from PyQt6.QtWidgets import (
                            QApplication,
                            QWidget,
                            QComboBox,
                          )
                          
                          import sys
                          
                          
                          class Window(QWidget):
                            def __init__(self):
                              super().__init__()
                          
                              combobox = QComboBox(self)
                              combobox.addItems(['option 1', 'option 2', 'option 3'])
                          
                              self.setGeometry(0,0,500,500)
                              self.setWindowTitle('Combobox Bug')
                              self.show()
                          
                          
                          if __name__ == '__main__':
                            app = QApplication([])
                            window = Window()
                            sys.exit(app.exec())
                          

                          Wayland : It crashes and I am sent to login screen where I have to login again.
                          Xorg: No crash

                          Same thing happens on PySide6.

                          JoeCFDJ Offline
                          JoeCFDJ Offline
                          JoeCFD
                          wrote on last edited by JoeCFD
                          #21

                          @default run
                          strace yourapp
                          to check if any plugin is missing. You may be able to get some hints about the reasons.

                          1 Reply Last reply
                          0
                          • M Offline
                            M Offline
                            Moritz Ulmer
                            wrote on last edited by
                            #22

                            For a fix, see my comment: https://forum.qt.io/post/762082

                            The cause is a bug in mutter <= 42.5 under Wayland. Upgrade to proposed to get 42.9 which resolves the issue.

                            1 Reply Last reply
                            2

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