I literary had this problem today!!! What I did to fix, and I’m not sure which one of these it is, but I ran all of these and I got it to work again
sudo apt install --fix-broken
sudo apt-get update && sudo apt-get upgrade
sudo apt install --reinstall gnome
sudo apt install --reinstall xorg
sudo apt install --fix-missing
sudo apt autoremove
I don’t get it. Is it just audio tweaking tools that developers can use, that they have now made open source?