I intended to catch diwic on IRC, but didn't see him the last couple of days, so in order not to forget, here is my question to the list. In this commit some stuff got shuffled around in alsa-mixer http://git.0pointer.de/?p=pulseaudio.git;a=commitdiff;h=b0f72311 With the result that the check_required function is now unused (or more precise: only used by itself). This is probably incorrect. David, can you explain/fix? Maarten