USB Administration Guide

How to Remove Unused USB Audio Device Links

Use the procedure below if a USB audio device is removed while the system is powered off. It is possible that removing the USB audio device while the system is powered off will leave the /dev/audio device still pointing to a /dev/sound/* device that doesn't exist.

  1. Become superuser.

  2. Close all audio applications.

  3. Remove the unused audio links.

    # devfsadm -C -c audio