Wii U Pro Controller not working

When I try to use my Wii U pro controller for Retroarch on my homebrewed Wii U, the controller doesn’t work properly and instead the menu says:

  • WiiU Pro Controller configured in port #2
  • N/A (0/0) not configured
  • Device disconnected from port #2 (WiiU Pro Controller)
  • WiiU Pro Controller configured in port #2
  • Device disconnected from port #2 (N/A) And then the Wii U pro controller doesn’t do anything. Does anyone know how to fix it, or if at least anyone else has the same issue?