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alsa setup is very easy once you've done it. just install alsa-utils, I usually reboot for the heck of it, then run alsactl init (as root), then as regular user, alsamixer for vol and channel setup, and then alsactl store *as root) once everything works the way I want. If something is wrong I use speaker-test to see if i get a hint.
They all have decent man pages, but really pretty simple and reliable tools.
Install, configure, refresh and remove snap packages. Snaps are 'universal' packages that work across many different Linux systems, enabling secure distribution of the latest apps and utilities for cloud, servers, desktops and the internet of things.
the error message from post #1 looks some sort of ALSA/pulseaudio conflict.
which is your current soundarchitecture, and which one does spotify require?
Install, configure, refresh and remove snap packages. Snaps are 'universal' packages that work across many different Linux systems, enabling secure distribution of the latest apps and utilities for cloud, servers, desktops and the internet of things.
I see. Well if your sound setup is working correctly in every other way, then maybe you should file a bugreport against the spotify app and show them the permissions on the alsa.conf it can't open?