Вот что у меня
gentoo-laptop ~lupo # lspci -k | grep -i audio -A 3
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
Subsystem: Toshiba America Info Systems Device ff01
Kernel driver in use: snd_hda_intel
Kernel modules: snd-hda-inte
gentoo-laptop ~lupo # eix -Ic alsa
[i] media-libs/alsa-lib (1.0.25-r1@30.01.2012): Advanced Linux Sound Architecture Library
[i] media-plugins/gst-plugins-alsa (0.10.35(0.10)@02.08.2011): plugin for gstreamer
[i] media-sound/alsa-headers (1.0.25@27.01.2012): Header files for Advanced Linux Sound Architecture kernel modules
[i] media-sound/alsa-utils (1.0.25-r2(0.9)@09.04.2012): Advanced Linux Sound Architecture Utils (alsactl, alsamixer, etc.)
Found 4 matches.
gentoo-laptop ~lupo # rc-status boot | grep alsa
alsasound [ started ]
gentoo-laptop ~lupo # zegrep SND /proc/config.gz | grep -v '^#'
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_JACK=y
CONFIG_SND_SEQUENCER=m
CONFIG_SND_SEQ_DUMMY=m
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_HRTIMER=m
CONFIG_SND_SEQ_HRTIMER_DEFAULT=y
CONFIG_SND_RTCTIMER=m
CONFIG_SND_DYNAMIC_MINORS=y
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VMASTER=y
CONFIG_SND_KCTL_JACK=y
CONFIG_SND_DMA_SGBUF=y
CONFIG_SND_AC97_CODEC=m
CONFIG_SND_DRIVERS=y
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=1
CONFIG_SND_TEA575X=m
CONFIG_SND_PCI=y
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_PREALLOC_SIZE=64
CONFIG_SND_HDA_INPUT_BEEP=y
CONFIG_SND_HDA_INPUT_BEEP_MODE=2
CONFIG_SND_HDA_INPUT_JACK=y
CONFIG_SND_HDA_CODEC_REALTEK=y
CONFIG_SND_HDA_ENABLE_REALTEK_QUIRKS=y
CONFIG_SND_HDA_CODEC_ANALOG=y
CONFIG_SND_HDA_CODEC_SIGMATEL=y
CONFIG_SND_HDA_CODEC_VIA=y
CONFIG_SND_HDA_CODEC_HDMI=y
CONFIG_SND_HDA_CODEC_CIRRUS=y
CONFIG_SND_HDA_CODEC_CONEXANT=y
CONFIG_SND_HDA_CODEC_CA0110=y
CONFIG_SND_HDA_CODEC_CA0132=y
CONFIG_SND_HDA_CODEC_CMEDIA=y
CONFIG_SND_HDA_CODEC_SI3054=y
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_POWER_SAVE=y
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=10
CONFIG_SND_INTEL8X0=m
CONFIG_SND_INTEL8X0M=m
Был, был и весь вышел...