This is a howto to make the C-Media USB Headphone Set work in K/Ubuntu 9.04. I used Kubuntu, didn't try it with Ubuntu...
Image of the device:
http://www.martialarts.hu/data/blog_...2-kmsndu10.jpg
When you plug in the usb device, linux will recognize it, but sound will not work at all, as it is blacklisted by alsa.
First, open up alsa-base.conf:
[Kubuntu] sudo kate /etc/modprobe.d/alsa-base.conf
or:
[Ubuntu] sudo gedit /etc/modprobe.d/alsa-base.conf
Find the following line:
options snd-usb-audio index=-2
And change it to:
#options snd-usb-audio index=-2
Save and reboot your machine. You should have sound now. If not, open the sound mixer and see if something is muted.
I also had an other problem: Only one program had sound. If I played something in audacious, youtube had no sound etc...
To solve this you have to uninstall pulseaudio and install esound.
sudo apt-get remove pulseaudio
sudo apt-get install esound
Restart your machine and try again. You may have to set the proper sound device (alsa) for your programs.
I tested this with audacious, smplayer and flash.
- Please confirm that this works for you too..
- Please confirm that this works in Ubuntu 9.04 too...



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