[SOLVED] ALSA and intel soundcard - not detected, /dev/snd is empty

Question

Hi, there was some topics mounths ago about this but I still can't figure out how to get my sound to work.
The main problem is that my soundcard is not detected and /dev/snd seems a little empty. I can't find the controlc0,1  files either....
Here is some useful info.
root@red red]# ls -l /sys/module/snd/holders/
total 0
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_hda_codec -> ../../snd_hda_codec
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_hda_intel -> ../../snd_hda_intel
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_hwdep -> ../../snd_hwdep
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_mixer_oss -> ../../snd_mixer_oss
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_pcm -> ../../snd_pcm
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_pcm_oss -> ../../snd_pcm_oss
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_seq -> ../../snd_seq
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_seq_device -> ../../snd_seq_device
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_seq_oss -> ../../snd_seq_oss
lrwxrwxrwx 1 root root 0 Jun 15 17:09 snd_timer -> ../../snd_timer
[root@red red]# lsmod | grep '^snd' | column -t
snd_seq_dummy 1439 0
snd_seq_oss 28928 0
snd_seq_midi_event 5412 1 snd_seq_oss
snd_seq 50530 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 5233 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_hda_intel 22514 0
snd_pcm_oss 39096 0
snd_hda_codec 68863 1 snd_hda_intel
snd_hwdep 6150 1 snd_hda_codec
snd_mixer_oss 16956 1 snd_pcm_oss
snd_pcm 70924 3 snd_hda_intel,snd_pcm_oss,snd_hda_codec
snd_timer 19684 2 snd_seq,snd_pcm
snd 57209 10 snd_seq_oss,snd_seq,snd_seq_device,snd_hda_intel,snd_pcm_oss,snd_hda_codec,snd_hwdep,snd_mixer_oss,snd_pcm,snd_timer
snd_page_alloc 7161 2 snd_hda_intel,snd_pcm
[root@red red]# ls -l /dev/snd/
total 0
crw-rw---- 1 root audio 116, 3 Jun 15 17:00 seq
crw-rw---- 1 root audio 116, 2 Jun 15 17:00 timer
Souncard : Don't know the exact name, the "intel hd" one with an ICH7 bridge
Mobo : intel d945gclf (little atom board, not the newer ones)
Notice that line : snd_hda_intel       22514  0
Seems to me that the module is loaded, am I right?
EDIT: Sorry, maybe I am in the wrong section...
Last edited by Lrouge (2010-06-18 18:33:54)

Answer 1

Looks pretty complete to me.  (OK, /dev/snd does look sparse.)  What do you see when you run alsamixer and press the F5 key?
$ sudo su -
# pacman -Sy alsa-utils
# alsamixer
Press F5 and check for:
* Master, Speaker, Front, Line, PCM volume down (if any)
* Any MM (bottom of vertical bar, signifies: line is muted) -- mute / un-mute with the 'm' key
Press Esc key to exit alsamixer + save changes.
Also, right after booting, run:  dmesg | grep -i codec
Look for something like "Realtek" or "ALC662" or similar.
Manually add codec driver: modprobe snd_hda_codec_realtek
ls -al /dev/snd
drwxr-xr-x 2 root root 60 May 28 19:35 by-path
crw-rw---- 1 root audio 116, 7 May 28 19:35 controlC0
crw-rw---- 1 root audio 116, 6 May 28 19:35 hwC0D2
crw-rw---- 1 root audio 116, 5 May 28 19:35 pcmC0D0c
crw-rw---- 1 root audio 116, 4 May 28 19:35 pcmC0D0p
crw-rw---- 1 root audio 116, 3 May 28 19:35 seq
crw-rw---- 1 root audio 116, 2 May 28 19:35 timer
lsmod | grep snd
snd_hda_codec_realtek 179443 1
snd_seq_dummy 1099 0
snd_seq_oss 25304 0
snd_seq_midi_event 4452 1 snd_seq_oss
snd_hda_intel 18921 0
snd_seq 42628 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device 4313 3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_hda_codec 56728 2 snd_hda_codec_realtek,snd_hda_intel
snd_pcm_oss 33693 0
snd_hwdep 5102 1 snd_hda_codec
snd_pcm 57479 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_mixer_oss 14810 1 snd_pcm_oss
snd_timer 16117 2 snd_seq,snd_pcm
snd 43847 11 snd_hda_codec_realtek,snd_seq_oss,snd_hda_intel,snd_seq,snd_seq_device,snd_hda_codec,snd_pcm_oss,snd_hwdep,snd_pcm,snd_mixer_oss,snd_timer
soundcore 5007 1 snd
snd_page_alloc 5809 2 snd_hda_intel,snd_pcm