http://monespaceperso.org/blog-en/2009/10/29/upgrade-alsa-1-0-21-on-ubuntu-karmic-koala-9-10/
I hope this helps.
http:// monespaceperso. org/blog- en/2009/ 10/29/upgrade- alsa-1- 0-21-on- ubuntu- karmic- koala-9- 10/
I hope this helps.