Input signal from grabber is visible 9 times alaksandus 24. Januar 2021 Hello,I've connected a 4k USB grabber to a Raspbarry Pi and checked the input image. It is shown 9 times instead of a fullschreen image.Anyone any thoughts on this? I don't know how I can troubleshoot this.Grabber: aliexpress.com/item/4000955932869.html