Updating ALSA Config

Raspbian Stretch - Updating alsa options

All we have to do is tell Raspbian to look at "card #1" for the default audio. Card #0 is the built in audio, so this is fairly straightforward.

Tun sudo nano /usr/share/alsa/alsa.conf and look for the following two lines:

defaults.ctl.card 0
defaults.pcm.card 0

Change both “0” to “1” and then save the file. That’s it!

Raspbian Jessie - Updating alsa options

Earlier versions of Raspbian store sound settings in different places, with different syntax…

For Raspbian Jessie, run sudo nano /etc/asound.conf and put the following in the file and save:

pcm.!default  {
 type hw card 1
}
ctl.!default {
 type hw card 1
}

This will make the default PCM (audio) output card #1 and the default control also card #1

Raspbian Wheezy - Updating alsa options

If you're using Wheezy, we'll edit the audio system configuration file with

sudo nano /etc/modprobe.d/alsa-base.conf

For all but the most recent Raspbian Wheezy releases, look for the line that reads:

#options snd-usb-audio index=0

Change this to:

options snd-usb-audio index=0

Note we removed the # at the start of the line.

For the latest Raspbian Wheezy versions, look for this line instead:

options snd-usb-audio index=-2

There's no # to remove in this case, just change the index from -2 to 0:

options snd-usb-audio index=0

Last updated on May 09, 2018 Published on Sep 17, 2013