Some GC buttons are dead for Dolphin

[CosmeFC]

    I recently installed Dolphin.
My desire is to use some GC games.
Only the A button from the Xbox Controller worked.
I can test all buttons on windows test.
Dolphin does not see some buttons. B,X and Y are dead for Dolphin.
I changed configuration directly without success.

Please, any ideas?

[wef1]

I have the exact same problem. I have a Matricom G Pad that Windows reads as an XBox controller, and only the B, X, and Y buttons don't work. Everything else does.