How to get my Fullscreen-Window to the second Screen?

[LowLevelM]

I try to get this sample Window on my second screen, i tried serveral ways but the window always appears on screen 0

My System: Dual-Monitor, nearly fresh Ubuntu 18.04 x64 installation with all updates, default Unity Window-Manager, NVIDIA Quadro M3000M with latest closed source driver (NVIDIA-SMI 390.116)

import QtQuick 2.5
import QtQuick.Window 2.5

Window {
    color: "black" // is always white
    
    //tried but gives me not the correct size
    //i don't know if these flags are needed
    //modality: Qt.ApplicationModal
    //flags: Qt.Dialog | Qt.FramelessWindowHint | Qt.WindowFullScreen
    
    // correct width, height but warning:
    // Conflicting properties 'visible' and 'visibility' for Window 'fullScreen'
    visibility : Window.FullScreen
    
    // the window always appears on screen 0
    // Qt.application.screens[1] puts the window also to screen 0
    screen: Qt.application.screens[0]
    
    Rectangle {
        anchors.fill: parent
        border { width: 10; color: "yellow" }
    }
    
    MouseArea {
        anchors.fill: parent
        onClicked: {
            Qt.quit()
        }
    }
    
    Component.onCompleted : {
        var screens = Qt.application.screens;
        for (var i = 0; i < screens.length; ++i)
            console.log("screen " + screens[i].name + " has geometry " +
                        screens[i].virtualX + ", " + screens[i].virtualY + " " +
                        screens[i].width + "x" + screens[i].height)
        //output:
        //qml: screen eDP-1-1 has geometry 0, 0 1920x1080
        //qml: screen HDMI-1-1 has geometry 1920, 0 1920x1080
    }
}

My Screen settings:

[IntruderExcluder]

Have you tried Component.onCompleted: showFullScreen() (without any flags and visibility props) for your window?

[LowLevelM]

@intruderexcluder

I've already fixed my problem

i also need to set

Window
x: screen.virtualX
y: screen.virtualY

the screen property own its own does just nothing