Single jack slot for multiple purposes

[akeliukas]

Hi everyone, I have this ASUS eee PC and it has only one jack slot. The idea is that the slot should be shared between headphones and microphone - system should either autodetect the device plugged in or let the user decide. My friend has the same model running windows 7 and everytime something is plugged in, there is a dialog box asking whether it's a microphone or headphones or whatever. My Gentoo linux always uses the slot for headphones, nomatter what I tried I wasn't able to record anything with any sort of device plugged in. So that's basically the problem.
Technical details:
Sound is working fine, there is an integrated microphone, which also works fine, but that's not exactly what I want
Soundcard - HDA Intel
Chip - Realtek ALC269VB
Kernel has the right sound [/u]drivers compiled into it - kinda weird, should I recompile them as modules?

[audiodef]

I know you're looking for an answer, which this is not (sorry), but that sounds like a really bad design. Inputs and outputs should always be separate connections.

Actually, I can directly answer your question: it doesn't matter whether you use in-kernel or modules. Per function, the result will be the same. However, I always encourage people to compile sound and video drivers as modules. This makes it easier to troubleshoot by providing the ability to load or unload modules without having to reboot.
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[Ant P.]

Have you checked in alsamixer for a switch to toggle it between input/output?

[audiodef]

[akeliukas]

I've checked for such a thing in alsamixer, there wasn't. Any other ideas?

[Ant P.]