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  4. Is "libegl warning: dri2: failed to authenticate" error significant in QtCreator?
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Is "libegl warning: dri2: failed to authenticate" error significant in QtCreator?

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  • I Offline
    I Offline
    Injunear
    wrote on last edited by
    #1

    I have QtCreator installed on a Raspberry Pi 3 and I am developing on it directly. When I start QtCreator from a terminal on the R_Pi desktop I get "libegl warning: dri2: failed to authenticate" and "No tool chain set from kit R_Pi_Desktop" and then QtCreator starts up and runs as expected.

    I can edit my GUI in QtCreator but am unable to build and run the edited version. It runs a previous version instead.

    Can I ignore the warnings listed when QtCreator starts up or are they significant. Are those errors causing my inability to build and run GUIs, or are they unrelated?

    I have searched for possible solutions but nothing appears relevant.

    Thank you for your help.

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

      Hi and welcome to devnet,

      What distribution are you running ?
      Did you compile Qt / Qt Creator yourself ?

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

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      • I Offline
        I Offline
        Injunear
        wrote on last edited by
        #3

        I am using the 2017-01-11-raspbian-jessie image.

        I got qtcreator on the R_Pi 3 by typing:
        sudo apt-get install qt5-default
        sudo apt-get install qtcreator

        I suppose this means I did not compile qt Creator myself.
        To run qtcreator, I open a terminal from the R_Pi desktop and type qtcreator.

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

          Indeed, you didn't build anything.

          Then what error are you getting when trying to build 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

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          • I Offline
            I Offline
            Injunear
            wrote on last edited by
            #5

            The compile output has no errors. When I try to run the GUI I get the libEGL warning again then a previous version of the GUI shows up.

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

              What do you mean by previous ?

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

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              • I Offline
                I Offline
                Injunear
                wrote on last edited by
                #7

                I have figured out the issue with running the previous version of the GUI. I wasn't setting things up correctly. That just leaves the question in the title. Thank you for your help so far.

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

                  I'd say that if everything is running correctly, keep an eye on it but continue developing :)

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

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