Comment 21 for bug 502223

I've checked the BIOS and there is no way to disable the modem. I've also checked the alsamixer and turned up everything that has to do with audio input to 100% and still no luck. What confuses me is that in the alsamixer and sound preferences there is an option of 3 audio input sources (Microphone, Front Microphone, and In-line) this is a bit strange since my laptop does not have any build in microphones and only one 3.5mm plug for an external one.

I'm also not sure what exactly "model=auto" in the last line of alsa-base.conf does but when i type it in there the microphone works perfectly except than it creates a problem of audio output to be sent to both internal speakers and headphones at the same time, as I described in the beginning.