Quick Tip: No Sound from HDMI Display / TV

Last updated: January 21, 2018

My laptop display was broken last night by accident. Now I connect my Ubuntu laptop to home TV using a HDMI cable for temporary use.

However, there’s no sound output from HDMI device (TV in my case) by default. So here’s the quick tutorial show you how.

1. Open terminal either via Ctrl+Alt+T or by searching for “terminal” from application launcher. When it opens, run command:


Then you’ll see something similar in following picture:

Here you need to make sure S/PDIF, S/PDIF 1, S/PDIF 2 are no muted.

  • use Left/Right keys to choose item.
  • press M to mute/unmute (00 means unmuted)

2. If sound is not muted via sound card mixer, launch “System Settings” and go to “Sound”:

Select HDMI device as sound output and unmute output volume.


I'm a freelance blogger who started using Ubuntu in 2007 and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please comment to remind me outdated tutorial! And, notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me via [email protected] Buy me a coffee: https://ko-fi.com/ubuntuhandbook1

2 responses to Quick Tip: No Sound from HDMI Display / TV

  1. there is no HDMI
    only built-in audio