No sound on Skype in 18.04. Perfect before update

This happened to me today. After trying the solutions shown nothing was solved.

Install pavucontrol

sudo apt install pavucontrol

After you run the audio test with Skype Tools > Config Audio and Video (in the section Speakers).

Open "pavucontrol" and you will be able to see that Skype is trying to use a different audio output (in my case was HDMI) I changed that and Skype audio worked again.

Hope it helps.

Try uninstalling Skype and re-installing it not from Ubuntu Software. Go directly to Skype official website https://www.skype.com/es/get-skype/ and downlod the .deb file. Once you have this file on your computer, open it with the "Software installation" option, by right-clicking on the icon. Install Skype from there. Once your installation is completed, go to the terminal and type:

skypeforlinux

Then you'll be able to use Skype normally.

This installation does not create an icon for you. So you have to create it.