Multiple pairs of joypads in RetroArch

Hi folks,

I have two Logitech Dual Action and two Retrolink Nintendo 64 Classic USB joypads. I use it in a MIni PC Intel NUC + Linux MInt MATE 17.1, 64 bits + Libretro + RetroArch + Emulation Station.

The system auto detect the joypads, I can config its using RGUI. But I should do it every time I change the type of control and, RetroArch see each pair like the same joypad. If I use Joypad #1, the emulator respond like I pressed simultaneously the same buttom on Joypad #1 and Joypad #2. So it’s impossible to play two players games.

If I install another emulator, like a independent snes9x o muplen64plus, it work correctly. It see each control like a independent joypad (#1 and #2).

I was investigating but solutions don’t work. I was trying write independent joypad config files, changing joypad_index value, etc. Any ideas?