That did the trick. When I installed pavucontrol the mic seemed to be muted, while at the menu of alsamixer it seemed ok. If you unmute it by pressing the speaker icon next to the Microphone entry in your input devices menu, it works like a charm.
-- Tested it on a DELL XPS 15 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990211 Title: [Dell XPS 14] Mic not working in Ubuntu 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/990211/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs