# 20.04 – No input and output sound device. Can’t Install Pulseaudio after deletion

I recently fixed my broken packages by deleting pulseaudio, since I cannot install any other packages that I needed for my research (I am using 20.04 btw). Deleting pulseaudio seems to solve my problem. I am now able to install other packages. It turns out that, after removing pulseaudio, I do not have any input and output to my sound device.

I even download the pulseaudio_13.99.1-1ubuntu3_amd64.deb and install it but failed due to this repeated error:

unable to make backup link of './usr/share/pulseaudio/alsa-mixer/paths/analog-output.conf.common' before installing new version: Operation not permitted

I have tried many methods all accross the internet but failed. Any help will be appreciated.