Re: Sound doesn't work on my system (lenny)

[Nigel Henry <cave.dnb2m97pp@aliceadsl.fr>]

On Thursday 17 July 2008 18:54, Anton Liaukevich wrote:
> Ron Johnson wrote:
> > On 07/17/08 11:07, Anton Liaukevich wrote:
> >> Sound doesn't work on my system. Neither system sounds in KDE, nor
> >> music123, nor vlc utter sound.
> >>
> >> My hardware:
> >>     Sound is integrated (AC'97)
> >>     motherboard: Epox 8RDA3I rev 3.3
> >>         northbridge: nForce 2 Ultra
> >>         southbridge: MCP
> >>         AC'97 codec: from Realtek
> >>
> >> My software:
> >>     Debian lenny
> >>     kernel: linux 2.6.24-1-686
> >
> > Is sound muted?  Which sound modules are installed?
> >
> > $ lsmod | grep ^snd
>
> Installed modules:
>
> $ lsmod | grep ^snd
> snd_intel8x0           32028  0
> snd_ac97_codec         92932  1 snd_intel8x0
> snd_pcm_oss            38272  0
> snd_pcm                71780  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
> snd_mixer_oss          15296  1 snd_pcm_oss
> snd_seq_dummy           3780  0
> snd_mpu401              8008  0
> snd_mpu401_uart         8000  1 snd_mpu401
> snd_rawmidi            22624  1 snd_mpu401_uart
> snd_seq_oss            29472  0
> snd_seq_midi_event      6976  1 snd_seq_oss
> snd_seq                46544  5
> snd_seq_dummy,snd_seq_oss,snd_seq_midi_event snd_timer              21092 
> 2 snd_pcm,snd_seq
> snd_seq_device          7820  4
> snd_seq_dummy,snd_rawmidi,snd_seq_oss,snd_seq
> snd                    48612  12
> snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_pcm,snd_mixer_oss,snd_mpu401,sn
>d_mpu401_uart,snd_rawmidi,snd_seq_oss,snd_seq,snd_timer,snd_seq_device
> snd_page_alloc         10056  2 snd_intel8x0,snd_pcm

Hi Anton. I notice that the "soundcore" module doesn't show on your lsmod, 
which it does on my Lenny install, but with a different soundcard. does your 
full lsmod show the "soundcore" module installed?

What do you get if you run.
cat /proc/asound/cards
Is your soundcard listed as card0?

Just another thought. Are you as user listed as a user for the audio group 
in /etc/group?

Try alsamixer on the CLI as user. Perhaps there are controls muted. the M key 
unmutes them. Perhaps sliders just need to be pushed up a bit. It's usual for 
alsamixer to set things at a low level, to protect your speakers, and ears.

I have just built a new machine which has a MCP61 southbridge, but don't have 
Lenny installed on it yet, and anyway the mobo is using snd-hda-intel. Sounds 
work ok, and the nearest to Lenny that is installed, is Kubuntu Gutsy Gibbon 
at the moment.

The latest kernel on my Lenny install is 2.6.21-2-686, but I did see some 
problems on the alsa-devel list with either 2.6.24, or 2.6.25 kernels, and 
MCP51, MCP61, and some other (sorry I've dumped the post). it will be in the 
alsa-devel archives though.

All I can think of at the moment.

Nigel.