I had a hard time getting the microphone to work on my MBP C2D, but
finally got it. At the end, it wasn't a kernel matter, but a mixer
one. I'm using a 2.6.22 kernel from Ubuntu. This is my configuration
in natural language (I can post the output of amixer if requested).
Check if it works for you or anybody else:
1) Run alsamixer.
2) In the "Playback" view (press F3):
-Front, Surround, Center, LFE, Side and Line In unmuted.
-Mic as Output and IEC958 muted.
-Input Source: Mic.
-Volume levels as you wish. I have everything but PCM (which I use
as master volume level) at the top.
3) In the "Capture" view (press F4):
-Capture level at 79.
-Digital level at 78.
-Mux level at 50.
These levels are very significative. I found that small changes
(specially on the "Mux" level) can get the mic to sound very low or
not sound at all.
Tell me if it worked. I've graved this configuration on stone with fire.
On 4/4/07, Antonio Rago <[EMAIL PROTECTED]> wrote:
> Hi all
> I definitely need help with the microphone of a macbook dual core (solo).
> I've tried all kernels from 2.6.18 to 2.6.21-rc5 and all the related
> mactel patches.
> My driver are alsa-base 1.0.13-5 and the sounds works greatly both from
> the internal speakers and from the jack.
> Moreover the jack mutes perfectly the speakers if it's plugged in.
> But the microphone don't work at all neither the built-in one nor an
> external one!
> I've tried also to change the sigmatel as suggest on
> http://gentoo-wiki.com/HARDWARE_Apple_MacBook, but still no luck.
> I've no clue of what's going on, the microphone works perfectly under
> macosx.
> To test the microphone I've used both the krec with artsd from kde and
> gnome's sound recorder.
> Could anyone help me?
> Probably I'm missing something I don't know.
> To give some more informations this is my lsmod, and attached there is
> my config for 2.6.21-rc5.
> Thanx all
> Antonio
--
Gabriel Rodríguez Alberich
http://chewie.blogalia.com
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