Hello,
I've been playing FlighGear for some time now and from the start I couldn't fullscreen it on my second (main) monitor (some ASUS 27 inch screen). Every time I toggled fullscreen or pressed Shift + F10 it fullscreened the game on my laptop (a much smaller screen, on my lefthand side(an HP Gaming Laptop)). Generally, this isn't an issue I would usually bother with, but because the game is good not being able to fullscreen it properly makes the experience a bit worse.
I am using:
I would very much appreciate if someone could help me with it because I really enjoy the game and see a lot of potential in it. If there is any more info needed for you to figure out what the issue is I will be here.
Best regards,
Matt. :)
The problem is that we only are aware of the screen where the window is first initialized. Thus, full screen mode will always move the window to that screen.
If you start FlightGear with --prop:/sim/rendering/camera-group/window/screen=1 you can force FlightGear to start on a different screen. Fullscreen will also work on that screen then.