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Err: Unable to query physical screen size,



  • When I cross compile and run Qt on my Raspberry I got this error:

    Unable to query physical screen size, defaulting to 100 dpi.
    To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).

    I set these environment variables in my ~/.bashsrc like this but still got same error

    QT_QPA_EGLFS_PHYSICAL_WIDTH=154
    QT_QPA_EGLFS_PHYSICAL_HEIGHT=86
    QT_QPA_EGLFS_WIDTH=800
    QT_QPA_EGLFS_HEIGHT=480

    Thanks for help


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