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QML applications hangs on Mac 11 Big Sur



  • I am using Qt QML C++ for developing desktop applications on Mac and Windows. My all QML C++ applications hang on app startup on Mac 11 Big Sur. Whereas Qt Widget (non-QML) applications work fine. Even Qt sample QML applications hang on startup.
    Any pointer to resolve this issue is highly appreciated.


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    Some issues with Big Sur have already been reported and AFAIK are being worked on.

    Keep in mind that this is currently an unreleased OS so you may have to either wait for the next release or build Qt yourself to get the fixes faster.



  • @SGaist Thank you I understand, Big Sur is an unreleased OS. The intention of posting this question was to ensure that QML apps hang issue is not something I am facing.
    QML apps hang but Qt Widget apps work fine, could you please confirm that this issue is known one.
    If some work is being done on this, I would like to know more about it and would love to contribute.


  • Lifetime Qt Champion

    The easiest for that is to take a look at the bug tracker.

    There are also a couple of thread on this forum.


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