Comment 168 for bug 200338

This is not a bug for Dell Installs (and I think for other OEM installs). Maybe somebody should filter out comments reporting bug on OEM or modified installs (i.e. modules package not from ubuntu repos) and take in account only bugs occuring on pure ubuntu install.

On Dell Laptops, if you have modem support your modules comes from Dell ppa. If you want modem *and* sound working together you must stay with Dell ppa packages. Maybe you should stick the modules package version to Dell ppa repos.

user@dell-laptop:~$ sudo apt-cache policy linux-ubuntu-modules-2.6.24-23-generic
linux-ubuntu-modules-2.6.24-23-generic:
  Installé : 2.6.24-23.37Dell1
  Candidat : 2.6.24-23.37Dell1
 Table de version :
 *** 2.6.24-23.37Dell1 0
        500 http://ppa.launchpad.net hardy/main Packages
        100 /var/lib/dpkg/status
     2.6.24-23.37 0
        500 http://ftp.crihan.fr hardy-updates/main Packages
        500 http://ftp.crihan.fr hardy-security/main Packages

user@dell-laptop:~$ sudo apt-cache policy linux-ubuntu-modules-2.6.24-24-generic
linux-ubuntu-modules-2.6.24-24-generic:
  Installé : 2.6.24-24.39
  Candidat : 2.6.24-24.39
 Table de version :
 *** 2.6.24-24.39 0
        500 http://ftp.crihan.fr hardy-updates/main Packages
        100 /var/lib/dpkg/status

As you can see, there is no Dell version of 2.6.24-24, so sound is broken when you update because you get package from ubuntu updates.

Remember : internal modems and sound chips are tied in hardware, so OEMs had to adapt sound modules to get modem working properly.