I'm trying to play in Big Picture mode using an Xbox 360 wireless controller in Windows 8. This controller works in Steam and in all my other Steam games (well, except for Psychonauts; it worked there the first time I tried and then never again).
It seems to sort of recognize the controller as a generic gamepad because I can configure the buttons in the settings and they show up as button 1, button 2, etc. But then when I try to press the same buttons in the actual game, nothing happens.
I saw the FAQ entry about non-working controllers, but I couldn't find either an "SDL_GamepadBind" setting in my config.vdf, or an SDLGamepad.config file in the game folder, so that didn't work out for me. I did manage to find the Data\Config\input.lua file, and I tried adding an entry for a controller named "Controller (Xbox 360 Wireless Receiver for Windows)" which is how the controller seems to be named elsewhere on my system, but this also did not solve the problem.
Now I'm stumped. Please help!