alsa-project/alsa-lib issue #101 was opened from witoldo7: Hi, SB Omni Surround 5.1 use default hw 1 for iec958.0 please update USB-Audio.conf, 0 is used for dac(jack connectors) Issue URL : https://github.com/alsa-project/alsa-lib/issues/101 Repository URL: https://github.com/alsa-project/alsa-lib