DUDU-Meng the option to adjust screen size disappears if you put a resolution that the screen does not support. Then no matter how many times you reboot, it will not readjust and dudu hu will not see the screen anymore.
I fixed this by plugging a test screen in that worked, then at the same time while the dudu hu was still on, unplugging my test screen and plugging in the second screen i want to use in my car. Then i was and to get the second screen to work.
I suggest dudu consider allowing that usb screen resolution option to always be on at all times and not just when a screen is plugged in that the hu can see a signal.
