Multidisplay not working

Unity Engine
,
1

I can’t get the new Input System to work with Multiple displays.

The setup:

  • Unity 2021.3.2f1

  • Input System 1.3.0 and 1.4.2 (neither work)

  • Windows 10

  • 7 Displays

  • Works in the Editor

  • Does not work in the build

  • All mouse input goes to the first display

  • I am using InputSystemUIInputModule, not StandaloneInputModule

Things I’ve tried:

  • World Space, Screen Space–Camera, and Screen Space–Overlay Canvases, one per Display
  • A single World Space Canvas covering all displays
  • Changing InputSystemUIInputModule.PointerBehavior
  • Having a separate MultiplayerEventSystem for each screen rather than a single EventSystem
  • All permutations of the above.

The mouse works in the legacy input system but touch doesn’t. I’ve switched over to the new system hoping it will work with touch, but I can’t seem to get even the mouse to work.

Any thoughts would be much appreciated!

2

To clarify, this is with the UnityEngine.UI.

I still haven’t found a solution so I’m going back to the old input system and hacking something up for multiple touchscreens.