2 Aug 2016, 20:32

Thanks very much subs. I have tested it with your first link (Case A). It doesn't work. 😞

Case B, it does not concern.

Assign USB ports with ID_PATH in udev also makes no sense, because there are 8 Controller.

Did you have another idea?
Could I solve it with RetroPi?

Here what I did according to your first link:

0_1470169811402_11.PNG