No Audio input device will work
20068
Internal microphone not working
78014
usb audio interface not recognized by alsa
153958
No sound after upgrade to 18.10, only a dummy device is shown
76641
the sound-volume indicator disappeard Ubuntu 13.10
68572
Easy way to switch default sound output device
90605
MacBook Pro (mid-2012) Microphone Input
157776
How to Play a sound file on line-in (Microphone)?
147190
No sound on Ubuntu 16.04 with realtek ALC892
8752
No Sound on Ubuntu 12.04
55087
No sound from bluetooth headset, but it's detected
94801
No sound on Ubuntu 18.04 (Spotify and YouTube don't work either)
6007
No sound (speakers/jack) + microphone's dead after spilling water
140244
Audio is working, but the speaker test doesn't work
158701
How to use JACK and Pulseaudio/ALSA at the same time on the same audio device?
60360
Microphone doesn't work in Hangouts
38799
Ubuntu 18.04: Audio doesn't work unless I switch between outputs
147000
How to fix Bang and Olufsen Audio for HP laptops?