That's… weird. Are you running it on a Debian or Debian-based distribution like Ubuntu or…? If so, gksudo should prompt you for your password, not root's.
Anyway, since running as root makes the controller work, this means that it is a permission issue. Just configure your system to grant your regular user the permissions to read the input devices and it should work fine.
As for force feedback, have you configured rumble in the controller settings in Dolphin? If it still won't work, try to right click on Rumble => Motor, then try every choice you have.
Anyway, since running as root makes the controller work, this means that it is a permission issue. Just configure your system to grant your regular user the permissions to read the input devices and it should work fine.
As for force feedback, have you configured rumble in the controller settings in Dolphin? If it still won't work, try to right click on Rumble => Motor, then try every choice you have.