Independent ALSA and linux audio support site


From the ALSA wiki

Jump to: navigation, search


Quick Install

NB. If you are using cvs then you need to type


instead of


In a shell type these commands:

Make a directory to store the alsa source code in.

cd /usr/src
mkdir alsa
cd alsa
cp /downloads/alsa-* .

Now unzip and install the alsa-driver package

bunzip2 alsa-driver-xxx
tar -xf alsa-driver-xxx
cd alsa-driver-xxx
./configure --with-snd-card=cmipci --with-sequencer=yes;make;make install

Now unzip and install the alsa-lib package

cd ..
bunzip2 alsa-lib-xxx
tar -xf alsa-lib-xxx
cd alsa-lib-xxx
./configure;make;make install

Now unzip and install the alsa-utils package

cd ..
bunzip2 alsa-utils-xxx
tar -xf alsa-utils-xxx
cd alsa-utils-xxx
./configure;make;make install

Now insert the modules into the kernel space.

modprobe snd-ad1848;modprobe snd-pcm-oss;modprobe snd-mixer-oss;modprobe snd-seq-oss

Now adjust your soundcards volume levels. All mixer channels are muted by default. You must use a native mixer program to unmute appropriate channels,for example alsamixer from the alsa-utils package


You can also look at the utils/alsasound file. This script is designed for the RedHat distribution, but it can be used with other distributions which use System V style rc init scripts. This will allow you to load your modules at boot time. Of course if you want to do this you could just compile them into the kernel instead and save yourself the hassle of coming to terms with the rc init scripts.

Module Options

If you have an IBM Thinkpad 360, 750, 755, or 755C with a Crystal CS4248 audio chip, the module options are:

snd-ad1848 port=0x4e30 irq=10 dma1=0 thinkpad=1

The "thinkpad" option was recently added to the driver and is required to initialize the audio chip on these laptops.

If you are not sure if you have this chip, you can open the thinkpad and in the upper left corner (near the headphone outputs & speaker) there will be a little board with the following components:

IBM part numbers on the sound board:

Setting up modprobe and kmod support

NB. Before you send a mail complaining that "I don't have /etc/modules.conf, where do I find it ....." ,The /etc/conf.modules has been deprecated with a few distro's so in your case, it may still be /etc/conf.modules. Basically they are both same, but recent version of modutils uses /etc/modules.conf instead. Nothing to worry about as such, optionally please update to latest version of modutils. This should solve your problem.

Here's the example for this card. Copy and paste this to the bottom of your /etc/modules.conf file.

# ALSA portion
alias char-major-116 snd
alias snd-card-0 snd-ad1848
options snd-ad1848  

# OSS/Free portion
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0

# card #1
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-12 snd-pcm-oss

To copy and paste the above to your /etc/modules.conf file follow these instructions.

See also

Retrieved from ""

Category: ALSA modules