Hi. I have no chance to test default_sound_unit change (made in sound-dev- changed.sh) at the moment. Let me express some suggestion though. Newly setup default_sound_unit should have playback cap. It's mentioned in the output of /dev/sndstat in (...): pcm5: <HDA Realtek ALC887 PCM #1 Analog> (play/rec) Regards, Vans.