lspci
 
Linux pelerin 2.6.17-10-generic #2 SMP Fri Oct 13 15:34:39 UTC 2006 x86_64 GNU/Linux
 
lsmod | grep snd
snd_hda_intel          23452  1 
snd_hda_codec         219392  1 snd_hda_intel
snd_pcm_oss            57344  0 
snd_mixer_oss          22784  2 snd_pcm_oss
snd_pcm               108168  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_timer              31112  1 snd_pcm
snd                    79016  6 snd_hda_intel,snd_hda_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore              14112  2 snd
snd_page_alloc         13200  2 snd_hda_intel,snd_pcm
 
sudo dpkg -p alsa-base
 
Package: alsa-base
Priority: optional
Section: sound
Installed-Size: 332
Maintainer: Debian ALSA Maintainers <pkg-alsa-devel@lists.alioth.debian.org>
Architecture: all
Source: alsa-driver
Version: 1.0.11-5ubuntu1
Provides: alsa
Depends: lsof (>= 4.64), module-init-tools (>= 3.2.1), linux-sound-base
Recommends: alsa-utils (>= 1.0.9a-4)
Suggests: apmd (>= 3.0.2-1), alsa-oss
Conflicts: modutils (= 2.3.20-1), lsof-2.2 (<< 4.64), discover1 (<< 1.7.3), discover (<< 2.0.7-1), alsa-utils (<< 1.0.9a-4)
Size: 157202
Description: ALSA driver configuration files
 This package contains various configuration files for
 the ALSA drivers.
 .
 For ALSA to work on a system with a given sound card,
 there must be an ALSA driver for that card in the kernel.
 Linux 2.6 as shipped in linux-image packages contains
 ALSA drivers for all supported sound cards in the form
 of loadable modules. For either Linux 2.6 or Linux 2.4
 a custom alsa-modules package can be built from the
 sources in the alsa-source package using the make-kpkg
 utility (included in the kernel-package package). Some
 pre-built alsa-modules packages are available in the
 Debian archive. Please read the README.Debian file for
 information about loading modules.
 .
 ALSA is the Advanced Linux Sound Architecture.
     http://alsa.sourceforge.net
 OSS is the free version of the Open Sound System.