I notice now that although the jack is green, it is labeled on the plastic as a "line out" jack. That fits with the tag=04 in the /proc/asound/card0/codec#0 file.
I notice now that although the jack is green, it is labeled on the plastic as a "line out" jack. That fits with the tag=04 in the /proc/asound/ card0/codec# 0 file.