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QT Creator hangs on opening a file or project

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  • hskoglundH Offline
    hskoglundH Offline
    hskoglund
    wrote on last edited by
    #11

    To add to @mrjj, in case the uninstallation of AVG didn't help, there's one more thing you could try, start a CMD window, type set path= to clear the path and then in that same CMD try start Qt Creator manually, eg:

    set path=
    C:\qt\tools\qtcreator\bin\qtcreator.exe
    

    If you can Browse for project folder location now, then there's something spooky in your path settings. However, when starting Qt Creator this way, you will most likely not be able to compile from inside Qt Creator :-(

    D 1 Reply Last reply
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    • mrjjM mrjj

      @dashthird
      reboot
      Then just try to run Creator.
      (i pray for a bit of luck)

      D Offline
      D Offline
      dashthird
      wrote on last edited by
      #12

      @mrjj
      Even after AVG uninstall + reboot, the issue is still there :(

      1 Reply Last reply
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      • hskoglundH hskoglund

        To add to @mrjj, in case the uninstallation of AVG didn't help, there's one more thing you could try, start a CMD window, type set path= to clear the path and then in that same CMD try start Qt Creator manually, eg:

        set path=
        C:\qt\tools\qtcreator\bin\qtcreator.exe
        

        If you can Browse for project folder location now, then there's something spooky in your path settings. However, when starting Qt Creator this way, you will most likely not be able to compile from inside Qt Creator :-(

        D Offline
        D Offline
        dashthird
        wrote on last edited by
        #13

        @hskoglund
        Tried your method also, set the path & also ran the QTCreator from CMD.
        Still then, on "File->Open project/file", the issue is same :(

        I would record a small video of the same & post it here

        1 Reply Last reply
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        • hskoglundH Offline
          hskoglundH Offline
          hskoglund
          wrote on last edited by
          #14

          Ok one more : try disconnect from internet, pull out the wire or disconnect the WiFi

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          • hskoglundH hskoglund

            Ok one more : try disconnect from internet, pull out the wire or disconnect the WiFi

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            dashthird
            wrote on last edited by
            #15

            @hskoglund Even after disconnecting from the internet, the issue is same

            @hskoglund @mrjj Please find the video link attached

            QTIssue.avi

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            • hskoglundH Offline
              hskoglundH Offline
              hskoglund
              wrote on last edited by
              #16

              Hi, saw the video, 2 things you can try:

              1. try reinstalling Qt 5.6.1 on C: (not E:)
              2. go to Control Panel and create a new user, log out and log in as that new user, then try Qt Creator
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              • hskoglundH hskoglund

                Hi, saw the video, 2 things you can try:

                1. try reinstalling Qt 5.6.1 on C: (not E:)
                2. go to Control Panel and create a new user, log out and log in as that new user, then try Qt Creator
                D Offline
                D Offline
                dashthird
                wrote on last edited by
                #17

                @hskoglund The issue is still the same!

                mrjjM 1 Reply Last reply
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                • D dashthird

                  @hskoglund The issue is still the same!

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #18

                  @dashthird
                  so even with new user, and Qt install on C:
                  it still does it ?
                  (OMG)

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                  • hskoglundH Offline
                    hskoglundH Offline
                    hskoglund
                    wrote on last edited by
                    #19

                    Oh, forgot one thing you can test: open a CMD window and start Qt Creator with 2 switches, like this:

                    C:\qt\Tools\QtCreator\bin\qtcreator.exe -noload all -load Core
                    

                    You will have a stripped down UI but Open File or Project is still present...

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                    • D Offline
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                      dashthird
                      wrote on last edited by
                      #20

                      @mrjj

                      I had tried 2 approaches:
                      created a new user "test"

                      1. in new user, simply tried opening QT Creator of E:(installed by old user) & then "File->Open project/file"
                        Still the same issue

                      2. in old user, deleted the QT from E:
                        in new user, installed QT at C: & then "File->Open project/file"
                        Still the same issue

                      @hskoglund
                      Would try your latest CMD method & would let you know the output

                      1 Reply Last reply
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                      • hskoglundH hskoglund

                        Oh, forgot one thing you can test: open a CMD window and start Qt Creator with 2 switches, like this:

                        C:\qt\Tools\QtCreator\bin\qtcreator.exe -noload all -load Core
                        

                        You will have a stripped down UI but Open File or Project is still present...

                        D Offline
                        D Offline
                        dashthird
                        wrote on last edited by
                        #21

                        @hskoglund
                        Yes, Yes, I am able to see the Open Project/file window when I open from CMD using:

                        C:\Qt\Qt5.6.1\Tools\QtCreator\bin\qtcreator.exe -noload all -load Core

                        Here's the screenshot:
                        5d16ef46-bdda-49de-8c3b-7f44628077ea-image.png

                        :)

                        Where do you think is the cause?

                        1 Reply Last reply
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                        • hskoglundH Offline
                          hskoglundH Offline
                          hskoglund
                          wrote on last edited by
                          #22

                          So most likely some Qt Creator plugin is the culprit.
                          To find which one(s), start Qt Creator (you can start it normally), open the Help\About Plugins dialog box.

                          Try deselecting (making the plugin not Load) some of the plugins, try first with all the plugins listed under Utilities. Then exit Qt Creator, start it again and try Open File or Project and see if it hangs. If it still hangs, try deselecting more plugins. If it does not hang, then try selecting a few plugins to see which one is the bad boy :-)

                          JonBJ 1 Reply Last reply
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                          • hskoglundH hskoglund

                            So most likely some Qt Creator plugin is the culprit.
                            To find which one(s), start Qt Creator (you can start it normally), open the Help\About Plugins dialog box.

                            Try deselecting (making the plugin not Load) some of the plugins, try first with all the plugins listed under Utilities. Then exit Qt Creator, start it again and try Open File or Project and see if it hangs. If it still hangs, try deselecting more plugins. If it does not hang, then try selecting a few plugins to see which one is the bad boy :-)

                            JonBJ Offline
                            JonBJ Offline
                            JonB
                            wrote on last edited by
                            #23

                            @hskoglund
                            Would this be a case where the user should set

                            set QT_DEBUG_PLUGINS=1
                            

                            in CMD before running qtcreator.exe and see if it reveals any plugin problem or suspect?

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                            • hskoglundH Offline
                              hskoglundH Offline
                              hskoglund
                              wrote on last edited by
                              #24

                              @JonB Might be, but the hang does not occur when launching Qt Creator, but when selecting Open File or Project, and by that time most of the plugins are already loaded.

                              JonBJ 1 Reply Last reply
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                              • hskoglundH hskoglund

                                @JonB Might be, but the hang does not occur when launching Qt Creator, but when selecting Open File or Project, and by that time most of the plugins are already loaded.

                                JonBJ Offline
                                JonBJ Offline
                                JonB
                                wrote on last edited by JonB
                                #25

                                @hskoglund
                                Yes, I have no idea, I was hoping with QT_DEBUG_PLUGINS they might speak up as they were called to do something and give a clue as to what was happening :)

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                                • hskoglundH Offline
                                  hskoglundH Offline
                                  hskoglund
                                  wrote on last edited by
                                  #26

                                  @JonB QT_DEBUG_PLUGINS will cause qDebug() outputs from the likes of qpluginloader.cpp and qlibrary.cpp but a normal plugin I think is an ignoramus re. that env. variable.

                                  But having a dbgview running before trying that Open File or Project hanging stunt can be a good idea, since there might be a qWarning issued in there somewhere...

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                                  • hskoglundH hskoglund

                                    @JonB QT_DEBUG_PLUGINS will cause qDebug() outputs from the likes of qpluginloader.cpp and qlibrary.cpp but a normal plugin I think is an ignoramus re. that env. variable.

                                    But having a dbgview running before trying that Open File or Project hanging stunt can be a good idea, since there might be a qWarning issued in there somewhere...

                                    D Offline
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                                    dashthird
                                    wrote on last edited by dashthird
                                    #27

                                    @hskoglund
                                    The culprit is the "Welcome" plugin (of "QT Creator" section)
                                    On disabling that, I am now able to do "File->Open file/project" :-)

                                    Now the starting QT UI seems a lot similar like the QT SDK 1.2.1 (maintained by Nokia), which I was using before upgradation to QT 5+ version.

                                    Thanks a lot!!!
                                    I can finally start coding in C++ now :)

                                    One last question: Is there any alternate way to enable the functionality of that "Welcome" plugin ?

                                    1 Reply Last reply
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                                    • hskoglundH Offline
                                      hskoglundH Offline
                                      hskoglund
                                      wrote on last edited by hskoglund
                                      #28

                                      Hmm don't know any alternate way, you'll have no "Welcome" icon on the left sidebar, but you can use the File menu to create new projects and load existing ones. And browse the Qt Examples manually using File Explorer.

                                      And F1 context help still works in the editor etc so you'll survive I think :-)

                                      Edit: just realized, you're not using a recent Qt Creator (version right now is 4.12.3)?
                                      Some years ago, the Welcome plugin in those old Qt Creator versions relied on OpenGL functionality, so it was a common cure to disable it like you did today (just google for "Qt Creator Welcome plugin problem")
                                      The Welcome plugin was rewritten to not rely on OpenGL, maybe 3 years ago? So you could try update your Qt Creator and re-enable the Welcome plugin...

                                      D 1 Reply Last reply
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                                      • hskoglundH hskoglund

                                        Hmm don't know any alternate way, you'll have no "Welcome" icon on the left sidebar, but you can use the File menu to create new projects and load existing ones. And browse the Qt Examples manually using File Explorer.

                                        And F1 context help still works in the editor etc so you'll survive I think :-)

                                        Edit: just realized, you're not using a recent Qt Creator (version right now is 4.12.3)?
                                        Some years ago, the Welcome plugin in those old Qt Creator versions relied on OpenGL functionality, so it was a common cure to disable it like you did today (just google for "Qt Creator Welcome plugin problem")
                                        The Welcome plugin was rewritten to not rely on OpenGL, maybe 3 years ago? So you could try update your Qt Creator and re-enable the Welcome plugin...

                                        D Offline
                                        D Offline
                                        dashthird
                                        wrote on last edited by dashthird
                                        #29

                                        @hskoglund
                                        Okay, would try that.

                                        I had actually downloaded a single all-in-one installation package qt-opensource-windows-x86-mingw492-5.6.1-1.exe

                                        I had not edited any QTCreator version in that. The QT Creator 4.0.1 is bundled with v 5.6.1, so may be the latest Creator v4.12.3 is bundled with v5.15. Would check that also

                                        Thanks a lot!
                                        Have marked your answer as the solution :)

                                        1 Reply Last reply
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                                        • mrjjM Offline
                                          mrjjM Offline
                                          mrjj
                                          Lifetime Qt Champion
                                          wrote on last edited by
                                          #30

                                          Hi
                                          Holy crap it was the welcome screen that did it ?
                                          That used to stop Creator from running at all if OpenGL support was to weak.
                                          I had never imagined it would affect the file open.
                                          As @hskoglund says, it used to be a common issue.

                                          jsulmJ 1 Reply Last reply
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