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  1. Qt
  2. QTBUG-113038

Output to two displays broken (when only screen is set on the window, without the correct virtual geometry)

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: P2: Important P2: Important
    • None
    • 6.5.0
    • QPA: EGLFS, QPA: KMS
    • None
    • Linux/Other display system

      Running the attached QML should output to two screens (if connected):

      qml screens.qml -platform eglfs

      Prior to 6.5 qmlscene has to be used instead of qml (QTBUG-110112). This aborts with "EGLFS: OpenGL windows cannot be mixed with others."

      Tested on Intel HW (OpenGL VENDOR: Intel RENDERER: Mesa Intel(R) UHD Graphics (CML GT2) VERSION: OpenGL ES 3.2 Mesa 22.2.5, Ubuntu 22.04 from VT) and on Raspberry Pi 4 (64bit, boot2qt). It works with Qt5.15 on both, though.

      Besides, directing a single Window to a specific screen doesn't work in Qt6.5 (it will always be shown on the first). This is also working in Qt5.15.

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            lagocs Laszlo Agocs
            bweimer Bernd Weimer
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              Created:
              Updated:
              Resolved:

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