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Note: This howto only applies to users of Ubuntu 5.04. For users of 5.10 and 6.06, this should already work.

Update: Not for all users of Breezy it is true. I was unabled to start liveCD session nor to Install it on HDD. First I disabled hotplug to finish installation. Then I tried alsa 1.0.10, but even this version didn't helped me. The solution was Realek's version of alsa [http://www.realtek.com.tw/downloads/dlhd-2.aspx?lineid=2004052&famid=2004052&series=2004061&Software=True&title=HD%20Audio%20CODECs#2004061Unix%20(Linux)] ALSA developers merging this version in current CVS

Download the latest alsa development release (driver, library, oss, and utils) from the [http://www.alsa-project.org Alsa project] and install it:

• The driver: "./configure --with-oss=yes --with-cards=hda-intel", then "make", and "sudo make install".
• The library, oss-lib, and utils - simply "./configure" "make" "sudo make install"
• Run "sudo alsaconf" and configure the sound card.
• Reboot.

Note 1: You will need the kernel headers, gcc compiler (gcc and g++ packages), and ncurses-dev in order to compile alsa. Install them using apt-get or synaptic package manager first.

Note 2: There is a problem of [http://ubuntuforums.org/showpost.php?p=141252&postcount=2 "scratchy" sound] with alsa 1.0.9rc1, 1.0.9rc2 and 1.0.9rc3.

Note 3: If alsaconf is unable to locate your card, repeat step #1 again, but without the "--with-cards option".

Note 4: You may need to right click on the volume control applet in your gnome-panel and go to the preferences and change the device to "HDA Intel (Alsa Mixer)". The same applies to the gnome volume control program.

Alternative way to the above:

How to install Intel High Definition Audio using "alsa-source" from universe

I found the above Howto quiet unclear. Thanks to some hints from the mailinglist, I tried the way using the alsa-source-package from univers. Finally I got a deb-package, which I could install with dpkg. It worked fine on Hoary.

Here are the steps:

(The # means you should do this as root, so either use the root-console or "$ sudo su -")

# apt-get install alsa-source

# apt-get install linux-headers-2.6.10-5-686

# apt-get install kernel-package    ## installs make-kpkg

# apt-get install ncurses-dev    ## I am not sure if this is really needed

$ less /usr/share/doc/alsa-source/README.Debian

# dpkg-reconfigure alsa-source    ## choose azx as driver

# apt-get install fakeroot

# cd /usr/src

# tar jxf alsa-driver.tar.bz2

# cd linux-headers-2.6.10-5-686

# make-kpkg --rootcmd=fakeroot --append-to-version=-5-686 modules-image 

# cd ..

# dpkg -i alsa-modules-2.6.10-5-686_1.0.8-4ubuntu4+10.00.Custom_i386.deb