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  1. Qt
  2. QTBUG-73831

QOpenGLWidget becomes black after suspend

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 5.11.1
    • GUI: OpenGL
    • None
    • Windows 10 x64, mingw64 with gcc 8.2,
      Renderer: NVIDIA Corporation GeForce GTX 780/PCIe/SSE2
      OpenGL Version: 4.6.0 NVIDIA 398.36
      Shader version: 4.60 NVIDIA
    • Windows

    Description

      After system resume from suspend my application become completely black, even menu toolbar and status bar.

      I am using QOpenGLWidget based class as a central widget in MainWindow. Minimum example to reproduce the issue is attached.

      Note if I delete glEnable( GL_DEPTH_TEST ); problem will disappear.

       

       

       

       

       

       

      Attachments

        1. after_suspend.PNG
          after_suspend.PNG
          3 kB
        2. before_suspend.PNG
          before_suspend.PNG
          3 kB
        3. glwindow.cpp
          0.4 kB
        4. glwindow.h
          0.3 kB
        5. main.cpp
          0.2 kB
        6. mainwindow.cpp
          0.3 kB
        7. mainwindow.h
          0.3 kB
        8. mainwindow.ui
          2 kB
        9. sleep_test.pro
          1 kB
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            lagocs Laszlo Agocs
            evgeniyvlasov Evgeniy Vlasov
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            Dates

              Created:
              Updated:

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