CM108 USB Audio device stopped working

[David Kuntadi]

On Sat, Aug 30, 2014 at 4:30 AM, Arvind S Raj <sraj.arvind at gmail.com> wrote:
> Hello everyone,
> I'm running Kubuntu 14.04.1 and possess a CM108 USB audio device,
> which was working fine until now. The audio device is detected
> correctly and all applications do write output to that device(I
> believe) but there is no sound received on the headset. I tried
> plugging in the headset's audio out directly and it works perfectly.
> Can someone help out in figuring why the USB audio has stopped
> working? Thank you very much!

May be you have two audio devices, one is on board and the other is
USB. Ubuntu automatically select the on board audio device. You have
to activate the USB device instead of the on board. Run alsamixer and
select the sound card (F6) .


On the link below, there is a script to do this automatically (I have
not tried it, just googled):
http://blog.ostermiller.org/ubuntu-usb-audio/

DK