I have just recently upgraded to Ubuntu 18.04 on Dell Vostro 15 laptop. I had some problems related to pulseaudio, so I ran these commands as it is shown here
sudo apt-get purge pulseaudio
sudo apt-get clean && sudo apt-get autoremove
After executing these commands I ran sudo apt-get install pulseaudio
and even tried running sudo apt install pulseaudio
but these errors occured :
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package pulseaudio 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
E: Package 'pulseaudio' has no installation candidate
Any ideas how do I fix this?
for a long shot
Go to Tab updates and activate bionic-updates and bionic-security.