A quirk for this machine has been committed upstream recently - it is also cc:ed to stable, but there hasn't been any upstream stable release since. It should work in Natty.
commit ca6cd851d7d22767d68b674590d836f468d1913a Author: Daniel T Chen <crim...@ubuntu.com> Date: Sat Jan 8 18:25:27 2011 -0500 ALSA: hda: Use vostro model quirk for Dell Vostro 1014 ** Changed in: alsa-driver (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/726833 Title: Headphones do not work/mute internal mic -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs