Also
sudo lspci -v | grep -i audio
00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 01)
cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xfe8f8000 irq 43
cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.25.
cat /proc/asound/oss/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.25 emulation code)
Kernel: Linux MS-253 3.5.0-sabayon #1 SMP Tue Sep 11 08:32:37 UTC 2012 i686
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
HDA Intel at 0xfe8f8000 irq 43
Audio devices: NOT ENABLED IN CONFIG
Synth devices: NOT ENABLED IN CONFIG
Midi devices: NOT ENABLED IN CONFIG
Timers:
31: system timer
Mixers: NOT ENABLED IN CONFIG
dmesg | grep intel
[ 0.936216] intel_rng: FWH not detected
[ 0.936456] agpgart-intel 0000:00:00.0: Intel G33 Chipset
[ 0.936513] agpgart-intel 0000:00:00.0: detected gtt size: 524288K total, 262144K mappable
[ 0.936703] agpgart-intel 0000:00:00.0: detected 8192K stolen memory
[ 0.936894] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xe0000000
[ 0.971138] intel_idle: does not run on family 6 model 15
[ 1.304550] fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver
[ 1.374835] fbcon: inteldrmfb (fb0) is primary device
[ 1.419367] fb0: inteldrmfb frame buffer device
[ 11.874396] snd_hda_intel 0000:00:1b.0: irq 43 for MSI/MSI-X
lsmod
...
snd_hda_intel 17732 2
snd_hda_codec 55723 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 3390 1 snd_hda_codec
snd_pcm 44583 3 snd_hda_codec,snd_hda_intel
snd_page_alloc 4909 2 snd_pcm,snd_hda_intel
snd_timer 11094 2 snd_pcm
...
snd 33465 8 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_pcm,snd_hda_codec,snd_hda_intel
Please help me.