With the PulseAudio version 1:1.1-0ubuntu15.4
The fix in comment #17 works on 201306-13688
There will be two devices in the "Input" section,
Headset Microphone / Internal Microphone
With the fix in comment #19, it works on 201308-14155
There will be three devices, Internal Microphone / Headset Microphone / Microphone
in the "input" section when the headset is plugged in
And two devices, Headphone / Speaker in the output section.
The headset microphone (with 2-in-1 jack) could work with "Headset Microphone" selected,
The "Microphone" does not work with a single microphone or a headset microphone even with the "Speaker" selected in the Output section.
It could work if you plug the earphone, and talk into the earphone instead
(work with the earphone of a 2-in-1 jack headphone or a normal earphone)
With the PulseAudio version 1:1.1-0ubuntu15.4
The fix in comment #17 works on 201306-13688
There will be two devices in the "Input" section,
Headset Microphone / Internal Microphone
With the fix in comment #19, it works on 201308-14155
There will be three devices, Internal Microphone / Headset Microphone / Microphone
in the "input" section when the headset is plugged in
And two devices, Headphone / Speaker in the output section.
The headset microphone (with 2-in-1 jack) could work with "Headset Microphone" selected,
The "Microphone" does not work with a single microphone or a headset microphone even with the "Speaker" selected in the Output section.
It could work if you plug the earphone, and talk into the earphone instead
(work with the earphone of a 2-in-1 jack headphone or a normal earphone)