No Sound since latest updates

Nigel Henry cave.dnb2m97pp at
Mon Jan 19 20:25:55 UTC 2009

On Monday 19 January 2009 03:30, Roger Benham wrote:
> Thanks Nigel. Here is what I got (hoping that it all means much more to you
> than to me!) Quoting you:
> "Hi Roger.
> "I don't see any problems with the output you've posted above, and sound
> should be working.
> "Try running speaker-test as user, and post the output."
> roger at roger-desktop:~$ speaker-test
> speaker-test 1.0.17
> Playback device is default
> Stream parameters are 48000Hz, S16_LE, 1 channels
> Using 16 octaves of pink noise
> Rate set to 48000Hz (requested 48000Hz)
> Buffer size range from 192 to 2097152
> Period size range from 64 to 699051
> Using max buffer size 2097152
> Periods = 4
> was set period_size = 524288
> was set buffer_size = 2097152
>  0 - Front Left
> Time per period = 10.972497
>  0 - Front Left
> Time per period = 10.955161
>  0 - Front Left
> Time per period = 10.952952
>  0 - Front Left
> etc. etc.
<Nigel, he says>
That's ok, and speaker-test isn't complaining. It's playing the pink noise, 
but you arn't hearing it.
> ====================================================
> "Also run the following commands to see what may be grabbing the soundcard,
> and preventing you hearing sounds. I ask because of this line from your
> lsmod output.
> snd_intel8x0?????????? 37532? 4  (the 4 may be a problem)
> lsof -n | grep /dev/dsp
> lsof | grep /dev/snd"
> roger at roger-desktop:~$ lsof -n | grep /dev/dsp
> roger at roger-desktop:~$ lsof | grep /dev/snd
> mixer_app  6032      roger   22u      CHR      116,8               13425
> /dev/snd/controlC0

No problems with the output from the above 2 commands. Nothing has 
grabbed /dev/dsp, and stopped other sound apps from playing, and it's normal 
for the mixer to show in /dev/snd.

it may be worth looking at /etc/group, and make sure you are, or still are a 
member of the audio group. I did see a problem where the original user had 
sounds, but wasn't a member of the audio group, then he added more users, 
which were not added to /etc/group's audio group, and also lost sound output 
for his original user, which as I've said earlier, was never listed 
in /etc/group, although he was able to use sounds as user with no problem.

I hope you're following me here, as it may sound a bit weird, but when I 
suggested he add his user name to the audio group his sounds worked again as 
user. If for some reason you see the same problem, with a missing user on the 
audio group, you can simply add your user name to the audio group directly, 
as root, using gedit. Mine looks like this. See below.

audio: x: 29: djmons

It's worth a look.

Meanwhile, back to alsamixer. Open it again as, alsamixer -D hw:0, and check 
for muted controls. There may be switches, without sliders, that may need to 
be toggled.

Download this script from the link below, save it as, make it 
executable, and run it as, ./ --no-upload. Attach the file which 
has been saved in your /tmp directory when replying to the list.

This script gathers a lot of info, specifically about the sounds, and may help 
me, or others on the list to help you resolve this sound problem.

Sorry. I can't think of any more suggestions at this point in time.

Best wishes.


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