Comment 5 for bug 318942

This isn't just a problem with UNR, there seems to be a lot of people on the forums having this with HP Mini's running standard Ubuntu. I'm getting this on an HP Mini 1010NR running Kubuntu Jaunty.

Alsa Project script info can be found at:
http://www.alsa-project.org/db/?f=e8288c5dd752a7077fd630edd0f28ec9eec90332

Given that ALSA 1.0.19 seemed to fix the problem for Gohai, and that Luke Yelavich's PPA has it, I suggest trying to add:
deb http://ppa.launchpad.net/themuso/ppa/ubuntu jaunty main

to your sources, updating, rebooting and seeing if that helps. Either way, let us know here along with your model so we can see who this works for.