I've got an iBuffalo USB controller that I'd like to add to my Picade setup. I set it up via the EmulationStation GUI, and it seems to be working OK, but both my joystick and the controller appear to be controlling player 1.
I've been round the houses with various different incantations and finally settled on adding the config that was generated in /opt/retropie/configs/all/retroarch-joypads to /opt/retropie/configs/all/retroarch.cfg, replacing
input_player2, but still no joy. Any ideas on how to get my USB controller working correctly?