Hi BuZz,
thanks a lot for your reply.
sorry, but i just realise that i didn't explain things correctly yesterday, i am not using any usb hub or things like that, when i say that i have 3 different input, that's input i have try to use one by one on my raspberry zero.
now for both keyboard (if i need a keyboard to configure my pi, i will try to find another one less exotic) and xbox360 controller, i think i will not try to use it with my pi anymore.
i will use only the logitech gamepad for the moment, so i will check the content of your link to see if i could solve the problem in the version 3.8.1.
thanks for your help.