can only use one controller (GPIO-Adapter)

[hutipie]

Hey everyone,

I just finished installation of my RetroPie and I have a strange problem.
I can only use one controller at a time. As soon as I connect a second one, the first controller stops working.
This behaviour can already be observed via

jstest /dev/input/js0
jstest /dev/input/js1

both controllers work fine in both slots seperately, but no response anymore when I connect the second one. Also the additional button on the adapter continues to function as intended.
Other than that everything works fine.

Where should I start looking?

[petrockblog]

I would start to check the connections between the adapter and the SNES connectors. Maybe there is mix-up with the connections.

[Author]

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