Hi!

I'm under AMD64/CoreDuo on Vostro 1400 (STAC9228) and successfully
installed linux-backports-modules-2.6.22.14.21 via the gutsy-proposed
repository. The Mic still don't work, and I have the DIGITAL bar on
gnome-volume-control as I did before.

While running any instance that needs the Mic , I only can hear an
horrible and loud noise. It doesn't matter how I turn up or down the
CAPTURE and DIGITAL volumes. It's useless to talk anything.

While testing the audio capture on System > Preferences > Sound, I get the 
following error:
gconfaudiosrc ! audioconvert ! audioresample ! gconfaudiosink profile=chat

Harvey, can you please explain better what you did here? I would like to follow 
this procedure.
----------
Since linux-backports-modules-2.6.22-14.11 will not build for amd64, I 
downloaded and installed the latest daily build of alsa-driver/lib/utils and 
applied the fixes to the alsa-driver as documented by Tim Gardner in 
ubuntu-gutsy-lbm/updates/sound/README.

The driver/lib/utils builds correctly, and the microphone now works on the 1420 
in amd64 (as it does in i386). I don't know enough about the debian 
packaging/build system to identify why linux-backports-modules-2.6.22-14.11 
will not build for amd64, but would guess that since I can build from source 
there may be something amiss with the package.
----------

Thank You!

-- 
[PATCH] Add STAC9228 DMIC support, SRU TEST CASE
https://bugs.launchpad.net/bugs/153963
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