From mboxrd@z Thu Jan  1 00:00:00 1970
From: adam <adam_jh@hotmail.com>
Subject: Re: HDA Analyzer - Dell M4500 Internal Mic
Date: Mon, 22 Nov 2010 20:48:40 +0000 (UTC)
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> 
> On Fri, Oct 15, 2010 at 2:07 AM, Luke Yelavich <themuso <at> ubuntu.com> 
wrote:
> > TO get a better idea of what has changed, could you also send a copy of the 
codec prior to the changes you made?
> 
> I've included my NEW (working) codec (thus not the old...).
> Furthermore here is the info of lspci -vvnn. I'm using the HDA Intel,
> not the Nvidia chip.
> 
> Thanks for helping!
> 
> - Tom
> 


NB to make this change permanent, I used HDA Analyzer tool, found the card 0, 
codec 0 and ticked the box which said input.

however, I undid this because it didn't work. I got my solution from: 
http://gaspuu.blogspot.com/2010/10/dell-precision-m4500.html

for ubuntu, all I had to add to:
    sudo nano /etc/modprobe.d/alsa-base.conf
was
    options snd-hda-intel model=dell-s14

and restart. I had changed the System->preferences->"multimedia systems 
selector" input to be alsa - but not sure I needed to.