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System Administration Guide: Devices and File Systems

ProcedureHow to Add USB Audio Devices

Use the following procedure to add USB audio devices.

Steps

  1. Plug in the USB speaker.

    The primary audio device, /dev/audio, points to the USB speaker.


    % ls -l /dev/audio
lrwxrwxrwx   1 root     root    10 Feb 13 08:46 /dev/audio -> usb/audio0

  2. (Optional) Remove the speaker. Then plug it back in.

    If you remove the speaker, the /dev/audio device reverts back to onboard audio.


    % ls -l /dev/audio
lrwxrwxrwx   1 root     root   7 Feb 13 08:47 /dev/audio -> sound/0

  3. Add a USB microphone.


    % ls -l /dev/audio
lrwxrwxrwx   1 root     root    10 Feb 13 08:54 /dev/audio -> usb/audio1