Comment 4 for bug 1990716

Have tried this fix: https://zcom.tech/ubuntu-no-sound.html/
First removing audio drivers.

$ sudo apt-get --purge remove alsa-base
$ sudo apt-get --purge remove pulseaudio

Then reinstalling, showing unmet dependencies and broken packages in case of pulseaudio (alsa-base is ok):

$ sudo apt-get install pulseaudio
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 pulseaudio : Depends: libpulse0 (= 1:15.99.1+dfsg1-1ubuntu1) but 1:15.99.1+dfsg1-1ubuntu2 is to be installed
E: Unable to correct problems, you have held broken packages.

Trying to reinstall the broken packages according to this suggested fix: https://askubuntu.com/questions/1380176/libpulse-dev-installation-problem

$ sudo apt install libpulse-dev=1:15.99.1+dfsg1-1ubuntu1 libpulse0=1:15.99.1+dfsg1-1ubuntu1 libpulse-mainloop-glib0=1:15.99.1+dfsg1-1ubuntu1
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies.
 libglib2.0-dev : Depends: libglib2.0-0 (= 2.72.1-1) but 2.72.3-0ubuntu1 is to be installed
                  Depends: libglib2.0-bin (= 2.72.1-1)
                  Depends: libglib2.0-dev-bin (= 2.72.1-1)
E: Unable to correct problems, you have held broken packages.

Trying to install instead the missing packages:

$ sudo apt install libpulse-dev=1:15.99.1+dfsg1-1ubuntu2 libpulse0=1:15.99.1+dfsg1-1ubuntu2 libpulse-mainloop-glib0=1:15.99.1+dfsg1-1ubuntu2
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package libpulse-dev is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  libpulse-dev:i386

E: Version '1:15.99.1+dfsg1-1ubuntu2' for 'libpulse-dev' was not found