I suggest trying latest kernel module/driver to make sure it has not been fixed already: https://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS
Once you have that done, reload ALSA (or just reboot) and run the following command to gather the logs: apport-collect 1351916 ** Package changed: pulseaudio (Ubuntu) => alsa-driver (Ubuntu) ** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1351916 Title: 4-pin jack mic doesn't work Status in “alsa-driver” package in Ubuntu: Incomplete Bug description: I have an Acer Aspire V5-571G with a Realtek soundcard in which there is one 4-pin jack (for mic and headset). When i plug a 4-pin headset only output is detected while input remains the same (it still using the integrated computer mic). Right now im using Ubuntu 14.04.1 LTS but anyway it neither work in previous versions. EDIT: My soundcard is Realtek but in ubuntu is called HDA Intel PCH. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1351916/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp