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QtCreator crashed and now will not start due to segfault

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  • T TMcSquared

    Hmm I'll try adding it to the PATH xD

    EDIT: that didn't work

    aha_1980A Offline
    aha_1980A Offline
    aha_1980
    Lifetime Qt Champion
    wrote on last edited by
    #14

    @TMcSquared

    No, that's not what I meant! I meant, have you done before? Or have you installed some program that did?

    Qt has to stay free or it will die.

    1 Reply Last reply
    0
    • mranger90M Offline
      mranger90M Offline
      mranger90
      wrote on last edited by
      #15

      Take a look at qt.conf in the creator/bin directory. If it's corrupted then plugins wont load.

      1 Reply Last reply
      0
      • T Offline
        T Offline
        TMcSquared
        wrote on last edited by
        #16

        It's not corrupted because it's a clean install

        1 Reply Last reply
        0
        • mranger90M Offline
          mranger90M Offline
          mranger90
          wrote on last edited by
          #17

          The try wiping out the creator files under AppData\Roaming\Qtproject

          1 Reply Last reply
          0
          • T Offline
            T Offline
            TMcSquared
            wrote on last edited by
            #18

            already did that.

            mrjjM 1 Reply Last reply
            0
            • T TMcSquared

              already did that.

              mrjjM Offline
              mrjjM Offline
              mrjj
              Lifetime Qt Champion
              wrote on last edited by
              #19

              @TMcSquared
              Best guess is that it gets wrong QtDLLs maybe via
              path.

              1 Reply Last reply
              1
              • T Offline
                T Offline
                TMcSquared
                wrote on last edited by
                #20

                My PATH variable has zero Qt paths in it. even after a clean install.

                mrjjM 1 Reply Last reply
                0
                • T TMcSquared

                  My PATH variable has zero Qt paths in it. even after a clean install.

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #21

                  @TMcSquared
                  I have no idea then.
                  last test
                  can you start with
                  qtcreator -noload Welcome -noload QmlDesigner -noload QmlProfiler
                  from shell and see if still crash ?

                  T 1 Reply Last reply
                  2
                  • mrjjM mrjj

                    @TMcSquared
                    I have no idea then.
                    last test
                    can you start with
                    qtcreator -noload Welcome -noload QmlDesigner -noload QmlProfiler
                    from shell and see if still crash ?

                    T Offline
                    T Offline
                    TMcSquared
                    wrote on last edited by
                    #22

                    :O It opened with qtcreator -noload Welcome -noload QmlDesigner -noload QmlProfiler

                    1 Reply Last reply
                    1
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #23

                      Hi,

                      Then it sounds like a graphic driver issue then. Are you sure there wasn't any modification in that regard 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

                      1 Reply Last reply
                      3
                      • T TMcSquared

                        Hmm I'll try adding it to the PATH xD

                        EDIT: that didn't work

                        JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by JonB
                        #24

                        @TMcSquared
                        You could check whether Windows Update snuck in and did anything since it last worked... :)

                        1 Reply Last reply
                        0
                        • T Offline
                          T Offline
                          TMcSquared
                          wrote on last edited by TMcSquared
                          #25

                          That's completely possible, thanks for your guy's help!
                          @SGaist I have no idea, it quit working while I was logged in.

                          1 Reply Last reply
                          1
                          • N Offline
                            N Offline
                            nwoki
                            wrote on last edited by
                            #26

                            Hi all. Sorry to revive this topic but this problem has occurred to me as well but on an application I wrote for a client. The application was running fine. Then it crashed (just like @TMcSquared ) and hasn't opened since.
                            My access violation is in the QtWidgets.dll module.

                            Any clues? (i don't have the welcome/QmlDesigner/etc modules to disable on load as does qtcreatorI)

                            mrjjM 1 Reply Last reply
                            0
                            • N nwoki

                              Hi all. Sorry to revive this topic but this problem has occurred to me as well but on an application I wrote for a client. The application was running fine. Then it crashed (just like @TMcSquared ) and hasn't opened since.
                              My access violation is in the QtWidgets.dll module.

                              Any clues? (i don't have the welcome/QmlDesigner/etc modules to disable on load as does qtcreatorI)

                              mrjjM Offline
                              mrjjM Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on last edited by
                              #27

                              @nwoki
                              Hi
                              Do you use QML?
                              if yes, could be a driver issue.

                              Do you have data files?
                              if yes, it could be damaged data files crashing app on load.

                              It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                              Buts its nearly impossible to guess on without far more concrete information :)

                              N 1 Reply Last reply
                              0
                              • mrjjM mrjj

                                @nwoki
                                Hi
                                Do you use QML?
                                if yes, could be a driver issue.

                                Do you have data files?
                                if yes, it could be damaged data files crashing app on load.

                                It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                                Buts its nearly impossible to guess on without far more concrete information :)

                                N Offline
                                N Offline
                                nwoki
                                wrote on last edited by
                                #28

                                @mrjj said in QtCreator crashed and now will not start due to segfault:

                                @nwoki
                                Hi
                                Do you use QML?
                                if yes, could be a driver issue.

                                This is reproducable only on the client pc. Any way I can debug this?

                                Do you have data files?
                                if yes, it could be damaged data files crashing app on load.

                                Cleaned and still no dice

                                It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                                No other Qt applications are installed

                                Buts its nearly impossible to guess on without far more concrete information :)

                                Any idea on how I can help gather more info for furthur debugging?

                                mrjjM 1 Reply Last reply
                                0
                                • N nwoki

                                  @mrjj said in QtCreator crashed and now will not start due to segfault:

                                  @nwoki
                                  Hi
                                  Do you use QML?
                                  if yes, could be a driver issue.

                                  This is reproducable only on the client pc. Any way I can debug this?

                                  Do you have data files?
                                  if yes, it could be damaged data files crashing app on load.

                                  Cleaned and still no dice

                                  It could be client installed other app using Qt dlls and now your app finds the wrong version of Qt dll.

                                  No other Qt applications are installed

                                  Buts its nearly impossible to guess on without far more concrete information :)

                                  Any idea on how I can help gather more info for furthur debugging?

                                  mrjjM Offline
                                  mrjjM Offline
                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on last edited by
                                  #29

                                  Hi

                                  This is reproducible only on the client pc. Any way I can debug this?
                                  Not really. you can ask him to update drivers and also
                                  collect information about opengl version supported.
                                  I take it, the project does use QML?

                                  Any idea on how I can help gather more info for furthur debugging?

                                  Well, i would add some logging to the app.
                                  So you can see if dies before main.
                                  That will give a hint if its related to actual user code or a DLL issue.

                                  N 1 Reply Last reply
                                  0
                                  • mrjjM mrjj

                                    Hi

                                    This is reproducible only on the client pc. Any way I can debug this?
                                    Not really. you can ask him to update drivers and also
                                    collect information about opengl version supported.
                                    I take it, the project does use QML?

                                    Any idea on how I can help gather more info for furthur debugging?

                                    Well, i would add some logging to the app.
                                    So you can see if dies before main.
                                    That will give a hint if its related to actual user code or a DLL issue.

                                    N Offline
                                    N Offline
                                    nwoki
                                    wrote on last edited by
                                    #30

                                    @mrjj doesn't even start, so adding any logging is futile. Double click on app -> immediate crash. I can see the crash errors in the windows EventViewer

                                    mrjjM 1 Reply Last reply
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                                    • N nwoki

                                      @mrjj doesn't even start, so adding any logging is futile. Double click on app -> immediate crash. I can see the crash errors in the windows EventViewer

                                      mrjjM Offline
                                      mrjjM Offline
                                      mrjj
                                      Lifetime Qt Champion
                                      wrote on last edited by
                                      #31

                                      @nwoki
                                      Hi
                                      and there is no code in main.cpp that could crash it ?
                                      that is 100% for sure ?

                                      Then it really sounds like DLL issue.

                                      Do you know what happens to client pc between app working and crashing ?
                                      Windows update or anything like that ?

                                      N 1 Reply Last reply
                                      0
                                      • mrjjM mrjj

                                        @nwoki
                                        Hi
                                        and there is no code in main.cpp that could crash it ?
                                        that is 100% for sure ?

                                        Then it really sounds like DLL issue.

                                        Do you know what happens to client pc between app working and crashing ?
                                        Windows update or anything like that ?

                                        N Offline
                                        N Offline
                                        nwoki
                                        wrote on last edited by nwoki
                                        #32

                                        @mrjj said in QtCreator crashed and now will not start due to segfault:

                                        @nwoki
                                        Hi
                                        and there is no code in main.cpp that could crash it ?
                                        that is 100% for sure ?

                                        This is the main.cpp

                                        int main(int argc, char *argv[])
                                        {
                                            QLocale::setDefault(QLocale::c());
                                        
                                            // Test fix
                                        #ifdef Q_OS_WIN
                                        //    QApplication::setAttribute(Qt::AA_UseSoftwareOpenGL);
                                        //    QApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
                                        //    QApplication::setAttribute(Qt::AA_UseOpenGLES);
                                        #endif
                                            // ----------
                                        
                                            QApplication a(argc, argv);
                                        
                                            QApplication::setOrganizationName("Organization");
                                            QApplication::setOrganizationDomain("organization.com/");
                                            QApplication::setApplicationName("MyAppName");
                                        
                                            // Setup QML
                                            qmlRegisterType<CommunicationCenter>("com.organization.myappname", 1, 0, "CommunicationCenter");
                                        
                                            PasswordRequestDialog pwdReqDialog;
                                            MainWindow w(&a);
                                        
                                            // is a password set?
                                            if (PasswordManager::isPasswordSet()) {
                                                pwdReqDialog.show();
                                        
                                                QObject::connect(&pwdReqDialog, &PasswordRequestDialog::passwordAccepted, [&w] () {
                                                    w.show();
                                                });
                                            } else {
                                                w.show();
                                            }
                                        
                                            // don't need to do anything on the "rejected" signal. We just exit the application
                                        
                                            return a.exec();
                                        

                                        Then it really sounds like DLL issue.

                                        Do you know what happens to client pc between app working and crashing ?
                                        Windows update or anything like that ?

                                        Don't know. The client said "I didn't do anything. It just stopped working..". What dlls are problematic? I find it strange that the app is working one day and just stops the next.

                                        mrjjM 1 Reply Last reply
                                        0
                                        • N nwoki

                                          @mrjj said in QtCreator crashed and now will not start due to segfault:

                                          @nwoki
                                          Hi
                                          and there is no code in main.cpp that could crash it ?
                                          that is 100% for sure ?

                                          This is the main.cpp

                                          int main(int argc, char *argv[])
                                          {
                                              QLocale::setDefault(QLocale::c());
                                          
                                              // Test fix
                                          #ifdef Q_OS_WIN
                                          //    QApplication::setAttribute(Qt::AA_UseSoftwareOpenGL);
                                          //    QApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
                                          //    QApplication::setAttribute(Qt::AA_UseOpenGLES);
                                          #endif
                                              // ----------
                                          
                                              QApplication a(argc, argv);
                                          
                                              QApplication::setOrganizationName("Organization");
                                              QApplication::setOrganizationDomain("organization.com/");
                                              QApplication::setApplicationName("MyAppName");
                                          
                                              // Setup QML
                                              qmlRegisterType<CommunicationCenter>("com.organization.myappname", 1, 0, "CommunicationCenter");
                                          
                                              PasswordRequestDialog pwdReqDialog;
                                              MainWindow w(&a);
                                          
                                              // is a password set?
                                              if (PasswordManager::isPasswordSet()) {
                                                  pwdReqDialog.show();
                                          
                                                  QObject::connect(&pwdReqDialog, &PasswordRequestDialog::passwordAccepted, [&w] () {
                                                      w.show();
                                                  });
                                              } else {
                                                  w.show();
                                              }
                                          
                                              // don't need to do anything on the "rejected" signal. We just exit the application
                                          
                                              return a.exec();
                                          

                                          Then it really sounds like DLL issue.

                                          Do you know what happens to client pc between app working and crashing ?
                                          Windows update or anything like that ?

                                          Don't know. The client said "I didn't do anything. It just stopped working..". What dlls are problematic? I find it strange that the app is working one day and just stops the next.

                                          mrjjM Offline
                                          mrjjM Offline
                                          mrjj
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #33

                                          @nwoki
                                          well, i would first check if his openGL is (still) working.
                                          Normally crash like this can happen if any other Qt dll are present in the system path
                                          and it loads that instead of the one
                                          in app folder.
                                          It can also be unexpected version of mingw/ visual studio runtime or
                                          any DLL that has unexpected version.

                                          If possible, i would send him a test exe that is just an empty QT GUI app.
                                          If that doesn't crashes, it means its not one of the Qt dlls.

                                          And yes, i agree taht normally apps just dont stop, so something has happens to his windows.

                                          N 1 Reply Last reply
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