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  1. Qt
  2. QTBUG-67499

Complete UI freeze on Optimus laptop (at least) when using QOpenGL within a QTabWidget

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P2: Important P2: Important
    • None
    • 5.9.3, 5.10.1
    • GUI: OpenGL
    • None

      I've came across this really strange issue when trying to use a QOpenGLWidget within a tab.
      If you look at the video I've attached with this issue, you can see that even within QtCreator, it's reproducible.

      Basically, when on the openGL tab, if you change tab, the UI won't be redrawn but the app is not frozen tho (I can see some debug if I connect a slot to the tabChanged signal).

      I was able to reproduce this on the 3 laptops I've descrided under the environment part.

        1. DxDiag.txt
          96 kB
          Nicolas Aubry
        2. frozen when trying to click.mp4
          8.24 MB
          Nicolas Aubry
        3. testOpenGL.zip
          2 kB
          Nicolas Aubry
        4. qtbug67499.zip
          3 kB
          Friedemann Kleint
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            lagocs Laszlo Agocs
            TheRealNox Nicolas Aubry
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              Created:
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