two microphone drivers, one only works with built-in another only headset, Why?

Aphx

Honorable
Feb 3, 2014
1
0
10,510
my laptop (HP compaq nc4830 with win8) has two microphone drivers. in sound (in conrol panel) there are two microphone drivers. one only works with built-in mic another only with headset. so to use one I have to switch the default from one driver to another. Why is that?
shouldn't windows do this automatically.

Thank you,

A.
 

wehler53

Distinguished
Dec 30, 2013
492
5
18,865
That's strange, they should be tied together as a single audio program that can access either driver. So that when an audio jack is recognised it'll only play through it and when it's removed it'll play through the laptop speakers.