Ok, I've loaded the snd-usb-audio: now the ux256 works! Great! But now...no audio at all ! Ok, I tried to load the snd-intel8x0 (it's my audiocard's module) manually, it loads, kmix can see the card, but I ca hear no audio (I've controlled levels), then I tried to run again alsaconf: it detects my card but...no sound. Something isn't working, and if I try to run alsamixer, I get no mixer but the following output: no mixer elems found. I think now alsa is recognizing just the ux256.