On Ubuntu 18.04, internal speakers work while headphones have no output
46713
Laptop headphone jack produces no sound
18307
Macbook pro 13 - Sound comes from speakers instead of headphones
6007
No sound (speakers/jack) + microphone's dead after spilling water
157542
Force sound's output on speakers
78014
usb audio interface not recognized by alsa
130739
how do I make my computer only play through my speaker even if headphones are plugged in?
131945
Sound only works from left speaker?
128530
Windows 10 Audio input to programs broken
76215
Sound not working in Ubuntu 14.04LTS after upgrading from 13.10
127160
No sound (dummy output) on Inspiron 7000 using Ubuntu 16.04
90975
audio not playing through headphones
114802
Sound not working at all
153919
Audio cuts out when CPU usage rises above ~30%
158701
How to use JACK and Pulseaudio/ALSA at the same time on the same audio device?
104254
USB Audio Device Loopback Through Speakers
50203
Make headphone output mono
20068
Internal microphone not working