Comment 7 for bug 515757

I need you to run the "alsa-info.sh" script mentioned in the link from my previous comment. This allows me to see details relating to your sound card, channel volumes, etc, etc. Please do the following (from the link provided in my previous comment):

Automatic Sound Information Collection

In the event that you are not running Jaunty Jackalope (9.04) you can less automatically gather sound information using the following script from the alsa project site: alsa-info.sh. By default, the script uploads the information to alsa-project.org . This information can be used by ALSA developers to improve current support for some cards. If you do not wish your information to be uploaded, please use the --no-upload argument when running the script. The script was written to aid the alsa developers, and also to help the people in #alsa to sort out sound issues. Please download the file to your home directory and run the script as follows:

    $ sh ./alsa-info.sh

or if you put it in your ~/bin and ~/bin is in your path and you make the file executable (chmod +x ~/bin/alsa-info.sh)

    *$ alsa-info.sh

    * The script will generate a URL. Please add this URL to your bug report.
    * If for some reason the script does not generate a URL, please use the --pastebin option (our original upload method)
    * The alsa-info.sh script can either be run as 'bash alsa-info.sh' _or_ made executable and run as './alsa-info.sh'.

I know you are running jaunty, but apport does not like the PPA version of alsa you are running.
Thanks in advance!