if node 0x18 is alway present, you need to use hda-jack-retask to set Misc bit ( MISC = NO_PRESENCE)
reboot and use input source to test the selected mic ( internal mic or mic jack) do your sony vaio pro13 have any headset provided ? ( seem no headset in accessory of sony web site) you need to know whether your headset are CITA or OMTP http://en.wikipedia.org/wiki/Phone_connector_%28audio%29 Standard Tip Ring 1 Ring 2 Sleeve Phones using this Standard OMTP Left Audio Right Audio Microphone Ground old Nokia (and also Lumia starting from the 2nd gen[15]), old Samsung, old Sony Ericsson (2010 and 2011 Xperia's), old Wiko (2012-) CTIA / AHJ Left Audio Right Audio Ground Microphone Apple, HTC, latest Nokia, latest Samsung, latest Sony (2012+), latest Wiko (2013+), most Android phones -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1228689 Title: sony vaio pro 13 internal microphone not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1228689/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs