I'm facing the issue that..
$ audacity
..starts audacity, but with missing inputs.
$ pasuspender -- audacity
..starts audacity with all my inputs restored, so I can record from line-in, but then I cannot listen to music while doing so and there's some other strange behavior when trying to playback what I recorded. In some parts the audio gets extremely loud and then back to normal. So it's not even a viable workaround.
All of this worked without problems on the same hardware before I upgrade from Linux Mint 19 to Linux Mint 20
Audacity v2.3.3
$ lsb_release -a
No LSB modules are available.
Distributor ID: Linuxmint
Description: Linux Mint 20.3
Release: 20.3
Codename: una
$ cat /etc/upstream-release/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=20.04
DISTRIB_CODENAME=focal
DISTRIB_DESCRIPTION="Ubuntu Focal Fossa"
