Hi Sam. If the above doesn't change anything on your T60 for the
sounds, there are a couple of options I can suggest, both of which
I've tried, and work. Not on a T60 admittadly, but on an Asus M2N-X
Plus mobo, with hda intel Azalia soundcard.
So to work, and this is the first thing I tried. Add the following
line to /etc/apt/sources.list.
deb ftp://musix.ourproject.org/pub/musix/deb/ ./
All you want from the above repo is a kernel, and the one I installed
has alsa driver 1.0.16, which resolved my problem, and may resolve
yours.
Next, do an apt-get update, then open synaptic. The kernel I
installed was, as below. linux-image-2.6.26.2-rt1-libre1
Having installed this kernel, make sure to go back into
/etc/apt/sources.list, and comment out the musix repo line, by
putting a # at the start of the line. I cannot stress this enough, as
if you do an apt-get dist-upgrade with the musix repo still active,
you could possibly find packages being updated from the musix repo,
and oftentimes can cause problems.
Ok. Now the new kernel is installed, reboot using your newly
installed kernel, and see if your sounds are working any better than
before.
Moving on to option 2, simply upgrade the alsa driver. Many patches
have been added to the alsa driver since 1.0.12rc1, particularly with
reference to the snd-hda-intel module, so go to the link below, and
download alsa driver 1.0.17, which is the current stable version.
http://alsa-project.org/main/index.php/Main_Page
I'd suggest creating a new folder in your /home/user directory for
this Alsa stuff. I simply name mine Alsa-drivers, and download all
the Alsa packages into this folder/directory.
You now need to install some packages, so as to get your newly
downloaded alsa driver built, and installed.
Su to root on the CLI, and open synaptic, and install the following
packages. build-essential kernel-package linux-headers-2.6.18-6
That done, close synaptic,and run apt-get install
linux-headers-$(uname -r)
This will install the headers for your kernel.
Now to build, and install the 1.0.17 alsa driver.
As user, cd to where you downloaded the driver, then do: tar xjvf
alsa-driver-1.0.17.tar.bz2
A new folder/directory has now been created, so do:
cd alsa-driver-1.0.17
Now type: ./configure, and when that runs to completion, type: make,
which may take some time. When make completes, with hopefully no
errors, su to root, and type make install. If all has gone well, and
after a reboot, (using the Etch kernel, not the musix one, if you've
also installed that) running cat /proc/asound/version should now show
the alsa driver as 1.0.17.
Now you may, or may not have better control of sounds on your T60.
I don't have a Lenovo T60 laptop, so these are only suggestions given
with the hope that they may be of some help in resolving your
problem.
You asked where I'd found the model options for the AD1981 codec. I
assume you have downloaded the 1.0.17 driver, and unpacked it using
tar xjvf, which creates a new folder/directory. Click on the new
directory, then on alsa-kernel, then Documentation, then
ALSA-Configuration.txt.
All the best.
Nigel.