Sorry for cross posting but I'm hoping to find some extra eyeballs to
work through this with me. Here is my initial problem:
I seem to have (partially) solved this by using gstreamer-properties
(thanks Seth!) to set the default input back to PulseAudio from
"Custom". Not sure how that changed, and I'd never heard of this
utility till today.
I'm still left with an unresponsive mic. PA volume meter shows flatline
so it seems to be muted somehow, but everywhere I look shows that it is
Part of my problem is that I still don't really know how all this stuff
fits together -- ALSA, PulseAudio and GStreamer. Furthermore, it was
all working till some recent event (maybe a pupdate, not sure) that
nuked it for me.
Any help in diagnosing sound issues would be most appreciated. I'll
echo my solution back to here and the forum once I get it solved.