Overview

Install some alsa packages. Compile alsa driver, then dpkg. At last, edit alsa-base.

There may be some waste.

Before installing, g++ and gawk are needed.

Synaptic

alsa-oss, alsa-source, alsa-tools, alsa-tools-gui, alsa-utils

Get the newest alsa-driver

# cd /usr/src

# sudo tar jxf alsa-driver.tar.bz2

# cd modules

# sudo wget ftp://ftp.alsa-project.org/pub/driver/alsa-driver-1.0.16.tar.bz2

Overwrite alsa-files

# sudo tar jxf alsa-driver-1.0.16.tar.bz2


# sudo mv modules/alsa-driver/debian modules/alsa-driver-1.0.16

# sudo rm -rf alsa-driver

Edit .config

# cd /usr/src/linux-headers-2.6.22-14-generic
# sudo cp /boot/config-2.6.22-14-generic .config
# sudo gedit Makefile

//difference
@@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 22
-EXTRAVERSION = .9
+EXTRAVERSION = -14-generic
NAME = Holy Dancing Manatees, Batman!
//

make-kpkg and install

# sudo make-kpkg modules_image

# cd ..

# sudo dpkg -i alsa-modules-2.6.22-14-generic_1.0.14-1ubuntu2+2.6.22.9-10.00.Custom_i386.deb

Edit alsa-base
#sudo gedit /etc/modprobe.d/alsa-base
options snd-hda-intel model=lg position_fix=1

Reboot.

Citation:
http://ubuntuforums.org/showthread.php?t=597575
http://ubuntuforums.org/showthread.php?t=210979
http://d.hatena.ne.jp/rudeboyjet/20080210/p1

This way doesn’t need to compile alsa driver.

http://myunko.wordpress.com/2008/02/27/ubuntu-realtek-alc880-setting-easier/