I solved it...
3 days... and 4 reinstall later... I realized that I only tested the buttons with the same rom. I tried another rom and it works...
I think the rom is broken but thanks for your help
I'd like to play some games in the SNES emulator.
I setup all buttons for the Xbox controller and the keyboard and everything works fine but the shoulder buttons (L1 / R1).
I use the xboxdrv Option and testet to map the buttons in the retroarch menu too but nothing works. The same problem appears with the keyboard and another simply USB-Controller too.
I there a solution for my problem?