I have got a new Surface Pro 11 (nice device BTW with the Snapdragon X Elite processor). Docs suggest that I should be able to connect it to a monitor that has a USB-C video input but when I try there is no signal no matter what settings I use. Is there a special USB-C cable I need to be using? I don't want buy the Microsoft Dock which seems a bit much since the laptop is supposed to support USB-C video.