gnome-control-center 1:3.4.2-0ubuntu0.13.1 in precise updates.
In laptop you can't reproduce this issue, cause there have 'Internal Microphone' already.
I find this issue im my PC, there are two jacks in front panel, input and output.
1. Install system and log in to Desktop
2. Connect the headphone in front panel
3. Open sound settings menu and click Input tab
gnome-control- center 1:3.4.2- 0ubuntu0. 13.1 in precise updates.
In laptop you can't reproduce this issue, cause there have 'Internal Microphone' already.
I find this issue im my PC, there are two jacks in front panel, input and output.
1. Install system and log in to Desktop
2. Connect the headphone in front panel
3. Open sound settings menu and click Input tab
I made an screenshot for it.