[stanton]

I can confirm that a VCC and GND swap resolves the issue for me.
Thanks for following up!

[stanton]

For Player 1, all of the buttons instantly change to an on state and remain there. I see the same behavior from Player 2, except for buttons 2 and 3. They do not instantly turn on and do show a state change when I pull them to ground.

pi@retropie ~ $ sudo jstest /dev/input/js0
Driver version is 2.1.0.
Joystick (ControlBlock Arcade Gamepad) has 2 axes (X, Y)
and 12 buttons (BtnX, BtnY, BtnZ, BtnTL, BtnTR, BtnTL2, BtnTR2, BtnSelect, BtnStart, BtnMode, BtnThumbL, BtnThumbR).
Testing … (interrupt to exit)
Axes: 0: 0 1: 0 Buttons: 0:on 1:off 2:off 3:off 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:off 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on
Axes: 0:-32767 1: 0 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on
Axes: 0:-32767 1:-32767 Buttons: 0:on 1:on 2:on 3:on 4:on 5:on 6:on 7:on 8:on 9:on 10:on 11:on

pi@retropie ~ $ sudo jstest /dev/input/js1
Driver version is 2.1.0.
Joystick (ControlBlock Arcade Gamepad) has 2 axes (X, Y)
and 12 buttons (BtnX, BtnY, BtnZ, BtnTL, BtnTR, BtnTL2, BtnTR2, BtnSelect, BtnStart, BtnMode, BtnThumbL, BtnThumbR).
Testing … (interrupt to exit)
Axes: 0: 0 1: 0 Buttons: 0:on 1:off 2:off 3:off 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:off 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:off 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:of
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on
Axes: 0: 0 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on
Axes: 0:-32767 1: 0 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on
Axes: 0:-32767 1:-32767 Buttons: 0:on 1:on 2:off 3:off 4:on 5:on 6:on 7:on 8:on 9:on 10:on 11:on

[stanton]

Just wanted to echo that I am experiencing precisely the same issue after attempting to setup a Pi 2 last night. I confirmed that my GPIO expanders are being recognized correctly. Like dotarj, when EmulationStation is started, two controllers are said to be recognized, but no button hold will start the gamepad configuration. The power switch functionality works as intended.

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