Re: An inquiry

On Tue, Jun 24, 2008 at 19:10:04 -0700, Stephen Mazurek wrote:
[I am writing in plain text. I hope that eliminates the HTML. If not,
then I'm not sure I know how google formats gmail.]

The HTML part is gone (thanks!), but now I have to pester you about the
top-posting: http://people.cornell.edu/pages/kk288/du-guidelines.html
(point 5 on that page)

Output of lsmod | grep snd
snd_intel8x0 32316 1
snd_pcm_oss 39456 0
snd_mixer_oss 15584 1 snd_pcm_oss
snd_intel8x0m 16844 0
snd_ac97_codec 93220 2 snd_intel8x0,snd_intel8x0m
ac97_bus 2432 1 snd_ac97_codec
snd_pcm 72612 4
snd_intel8x0,snd_pcm_oss,snd_intel8x0m,snd_ac97_codec
snd_timer 21284 1 snd_pcm
snd 48548 9
snd_intel8x0,snd_pcm_oss,snd_mixer_oss,snd_intel8x0m,snd_ac97_codec,snd_pcm,snd_timer
soundcore 7680 1 snd
snd_page_alloc 10248 3 snd_intel8x0,snd_intel8x0m,snd_pcm

That looks OK; the important modules are snd_intel8x0 and snd_pcm_oss.

Output of cat /dev/snd/stat No such file or directory.

Note that it is "/dev/sndstat" instead of "/dev/snd/stat". From the rest
of you data I would be willing to bet that the output you get from
cat'ing the right file will be OK, too.

Output of cat /proc/asound/cards

0 [I82801DBICH4 ]: ICH4 - Intel 82801DB-ICH4
Intel 82801DB-ICH4 with AD1981B at irq 11
1 [Modem ]: ICH-MODEM - Intel 82801DB-ICH4 Modem
Intel 82801DB-ICH4 Modem at irq 11

Sometimes the modem is selected as card 0, which can lead to the sound
output being sent to the (usually unconnected) modem by default. In your
case the order of sound card and modem is correct.

Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Sine wave rate is 440.0000Hz
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 2048 to 16384
Period size range from 1024 to 1024
Using max buffer size 16384
Periods = 4
was set period_size = 1024
was set buffer_size = 16384
0 - Front Left
Time per period = 2.665516

[...]

So speaker-test gave not sound.

On the other hand, it did not complain about any problem with the sound
device either. This often means that the sound output does in fact work,
and the only problem is that the volume is set too low.

Run the speaker-test command again and keep it running. Then open
another X terminal (or switch to another console) and run "alsamixer".
You should see bar-graph representations for the volumes of all the
different ALSA playback controls. You can move from one control to the
next one with cursor left/right and you can change the levels with
cursor up/down. Try to increase the levels until you hear something.
Also watch out for muted ("MM") channels; you can toggle their state by
pressing the space bar. The relevant controls will probably be called
"Master", "PCM" and "Headphon(es)". In some rare cases it can be
necessary to mute the headphones in order to hear anything from the
regular speakers.

I'd suspect that there should be a /dev/snd/stat for the sound to
work.

Just a simple typo (see above).

Thanks for these tests. I have my Linux books back on the shelf but
they are not too helpful with sound.

The ALSA wiki is a good place for more detailed information:
http://alsa.opensrc.org/index.php?page=AlsaOpensrcOrg

--
Regards, | http://users.icfo.es/Florian.Kulzer
Florian |


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