On Sun, 29 Nov 2020 23:21:39 +0100 (CET), Chris wrote in message
<MNL5D92--3-2@???>:

> only dummy output in pulseaudio

..excellent. :o) Disable it and mark it "Auto" in aptitude so it
goes away when we have all the dependencies fixed.

> alsamixer shows chtmax98090 and HDA Intel PCH for sound cards.

..in alsamixer, pick the HDA Intel card, then raise the "Master",
"Headphone", "PCM" and "Beep" volume bars, and verify they are
"OO"pen and not "MM"uted in the bottom window of said bars.

..also set the Auto-Mute Mode to whatever you want, e.g. "Speaker Only"
etc, and play e.g. a non-silent youtube video in a web browser while
you mess around with the audio.

--
..med vennlig hilsen = with Kind Regards from Arnt Karlsen
...with a number of polar bear hunters in his ancestry...
Scenarios always come in sets of three:
best case, worst case, and just in case.