Setting the Default Sound Device

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If your system keeps on using the wrong device (HDMI instead of PCH or vica versa, or some other problem), then do the following so you can identify the devices number & then instruct your system to use that number/device:

  • Run alsamixer - if you have it installed, just enter:
 alsamixer

at the terminal prompt.

  • In alsamixer hit the F6 function key, then you'll see the devices listed in a little box, with their numbers in front of them.

OR

  • Enter the following into a terminal:
 cat /proc/asound/cards
  • Choose the number of the sound device that you want to use.
  • Then using your text editor of choice, put the following into /etc/asound.conf (You will most likely have to create /etc/asound.conf ).
  defaults.pcm.card 1
  defaults.ctl.card 1

Change the number from 1 to 0 , 2 or whatever?

  • Save the file & play a movie or listen to a tune.


I can imagine that if you had need to change between two sound devices from time to time, you could write a simple script that quickly swapped from one /etc/asound.conf file to another. All it would have to do is change/swap the file extensions from asound.conf.bak to asound.conf & visa versa when desired. ;)


The core information in this page came from the ALSA Project: [1]


Support

Following is a link to this page's forum counterpart where you can post any related feedback: [2]