Recently my headphone was not working with ubuntu, so search something in stackoverflow and fixed after sometime suddenly sound is not audible outside and mic is also not working. It's weird how it happened. Attached image for reference 
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When i click Test in Output section, it coming below. Not sure what do to now. I had tried everything possible, some suggestion is appreciated
Check the available audio cards,
pacmd list-cards
Look through the default.pa configuration file and search for an active profile.
active profile: output:analog-stereo
Also make a note of the index number, in case 1 or 0
sudo nano /etc/pulse/default.pa
#Make some devices default #set-default-sink output #set-default-source input
Add the following under this:
set-card-profile 1 output:analog-stereo
Save the file in nano by Pressing CTRL + o and hitting enter
Then CTRL + x to exit nano
sudo shutdown -r now
###OR
check pavucontrol is active on your profile. Then uninstall pavucontrol and restart. Default configuration will be utilised.
