if you look at cs4207 datasheet, it can pan left or right channel this may min that it only need one pin complex for the mono internal mic and mono external mic
http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=commitdiff;h=16337e028a6dae9fbdd718c0d42161540a668ff3;hp=5a83b4b5a391f07141b157ac9daa51c409e71ab5. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/950494 Title: [Macbook Air 3,2] headset mic not recognized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/950494/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
