SuperMicro server board being used as workstation. Board has no audio itself. I have USB headphones I sometimes plug in. Unfortunately every time I plug them in I have use to use audio control panel and choose them. Why? lspci |grep Audio 01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1) lspci -n |grep "^01:00.1" 01:00.1 0403: 10de:0be3 (rev a1) Seems the cheap nVidia 405 card I have installed has an audio controller (Interestingly reported as Intel HD Audio by the sound control panel) which I guess it has because of the HDMI interface. Is there a way to tell the sound system to pretend that controller isn't there? I will never need audio over the HDMI.