Thank you very much for your answer. I'll try to contact Asus Support if I can't find a solution or post a new thread.

Oh, I thought it's a normal HD Audio..Thanks, I'll try it now.L.E. I've installed the recommended driver, everything works fine, except the subwoofer 

Hello!I just switched to Asus TUF GAMING X670E-PLUS WIFI, with Realtek S1220A audio, and I have some troubles with my 5.1 sound system. All the speakers are working in test, but the subwoofer has no sound in music, games or any app.I first installed ...