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Groups > linux.debian.user > #201025 > unrolled thread

something wrong with audio

Started bydotdeb@gmail.com
First post2018-10-08 19:10 +0200
Last post2018-10-10 14:40 +0200
Articles 5 on this page of 25 — 9 participants

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  something wrong with audio dotdeb@gmail.com - 2018-10-08 19:10 +0200
    Re: something wrong with audio steve <dlist@bluewin.ch> - 2018-10-08 19:20 +0200
      Re: something wrong with audio deloptes <deloptes@gmail.com> - 2018-10-08 20:30 +0200
        Re: something wrong with audio dotdeb@gmail.com - 2018-10-08 20:50 +0200
      Re: something wrong with audio dotdeb@gmail.com - 2018-10-08 20:50 +0200
    Re: something wrong with audio Gene Heskett <gheskett@shentel.net> - 2018-10-08 20:50 +0200
      Re: something wrong with audio dotdeb@gmail.com - 2018-10-08 21:00 +0200
        Re: something wrong with audio Gene Heskett <gheskett@shentel.net> - 2018-10-08 21:00 +0200
          Fwd: something wrong with audio dotdeb@gmail.com - 2018-10-09 10:10 +0200
        Re: something wrong with audio David Wright <deblis@lionunicorn.co.uk> - 2018-10-08 22:00 +0200
          Re: something wrong with audio Gene Heskett <gheskett@shentel.net> - 2018-10-08 22:30 +0200
    Re: something wrong with audio dotdeb@gmail.com - 2018-10-08 20:50 +0200
    Re: something wrong with audio Kent West <westk@acu.edu> - 2018-10-08 21:40 +0200
      Re: something wrong with audio David Wright <deblis@lionunicorn.co.uk> - 2018-10-08 22:10 +0200
      Re: something wrong with audio dotdeb@gmail.com - 2018-10-09 10:20 +0200
    Re: something wrong with audio dotdeb@gmail.com - 2018-10-09 13:30 +0200
      Re: something wrong with audio deloptes <deloptes@gmail.com> - 2018-10-09 20:00 +0200
    Re: something wrong with audio Curt <curty@free.fr> - 2018-10-09 14:10 +0200
      Re: something wrong with audio dotdeb@gmail.com - 2018-10-09 14:10 +0200
        Re: something wrong with audio Curt <curty@free.fr> - 2018-10-09 14:40 +0200
          Re: something wrong with audio Michael Lange <klappnase@freenet.de> - 2018-10-10 11:20 +0200
            Re: something wrong with audio Curt <curty@free.fr> - 2018-10-10 14:10 +0200
              Re: something wrong with audio Michael Lange <klappnase@freenet.de> - 2018-10-11 01:00 +0200
                Re: something wrong with audio Curt <curty@free.fr> - 2018-10-11 10:00 +0200
            Re: something wrong with audio "Martin McCormick" <martin.m@suddenlink.net> - 2018-10-10 14:40 +0200

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#201108

FromMichael Lange <klappnase@freenet.de>
Date2018-10-10 11:20 +0200
Message-ID<wHiOS-6zi-7@gated-at.bofh.it>
In reply to#201079
Hi,

On Tue, 9 Oct 2018 12:33:11 +0000 (UTC)
Curt <curty@free.fr> wrote:

(...)
> Actually that would be '/dev/snd*' not '/dev/dsp' (the latter being the
> old, obsolete oss sound device from way back when, which I doubt would
> exist on Stretch at all).

/dev/dsp surely exists in case the snd-pcm-oss driver module is loaded.

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

I object to intellect without discipline;  I object to power without
constructive purpose.
		-- Spock, "The Squire of Gothos", stardate 2124.5

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#201110

FromCurt <curty@free.fr>
Date2018-10-10 14:10 +0200
Message-ID<wHlto-89s-9@gated-at.bofh.it>
In reply to#201108
On 2018-10-10, Michael Lange <klappnase@freenet.de> wrote:
> Hi,
>
> On Tue, 9 Oct 2018 12:33:11 +0000 (UTC)
> Curt <curty@free.fr> wrote:
>
> (...)
>> Actually that would be '/dev/snd*' not '/dev/dsp' (the latter being the
>> old, obsolete oss sound device from way back when, which I doubt would
>> exist on Stretch at all).
>
> /dev/dsp surely exists in case the snd-pcm-oss driver module is loaded.

In this very case, in fact, according to the OP's lsmod list, so, right.

Of course, at the same time we are obliged to note gandering at his
module list that he's loading Alsa modules, too.

IOW he'd loading both oss and Alsa modules simultaneously (I think
I'm repeating myself).

https://wiki.debian.org/ALSA#ALSA_and_OSS

 If you don't unload all OSS modules then ALSA modules will not be able
 to initialise (or work properly) because the OSS driver will be futzing
 with the sound hardware that the ALSA driver needs to control. If you
 see a message about "sound card not detected" and you are sure you have
 the right ALSA driver, the presence of an OSS module could be the
 reason.

Maybe this, as they say in French, explains that. Or maybe not. I dunno.

But the OP has moved on to greener pastures, so I guess we won't ever know.

> Regards
>
> Michael
>
>
> .-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.
>
> I object to intellect without discipline;  I object to power without
> constructive purpose.
> 		-- Spock, "The Squire of Gothos", stardate 2124.5
>
>


-- 
"Now she understood that Anna could not have been in lilac, and that her charm
was just that she always stood out against her attire, that her dress could
never be noticeable on her." Leo Tolstoy, Anna Karenina

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#201143

FromMichael Lange <klappnase@freenet.de>
Date2018-10-11 01:00 +0200
Message-ID<wHvCp-5pG-5@gated-at.bofh.it>
In reply to#201110
On Wed, 10 Oct 2018 12:00:20 +0000 (UTC)
Curt <curty@free.fr> wrote:

(...)
> > /dev/dsp surely exists in case the snd-pcm-oss driver module is
> > loaded.
> 
> In this very case, in fact, according to the OP's lsmod list, so, right.
> 
> Of course, at the same time we are obliged to note gandering at his
> module list that he's loading Alsa modules, too.
> 
> IOW he'd loading both oss and Alsa modules simultaneously (I think
> I'm repeating myself).

snd-pcm-oss *is* an alsa module, you won't get anywhere with that without
loading the proper alsa drivers for your sound card too.

> 
> https://wiki.debian.org/ALSA#ALSA_and_OSS
> 
>  If you don't unload all OSS modules then ALSA modules will not be able
>  to initialise (or work properly) because the OSS driver will be futzing
>  with the sound hardware that the ALSA driver needs to control. If you
>  see a message about "sound card not detected" and you are sure you have
>  the right ALSA driver, the presence of an OSS module could be the
>  reason.
> 
> Maybe this, as they say in French, explains that. Or maybe not. I dunno.

No, this refers to the old OSS sound drivers which I think today are no
longer available in the linux kernel. With snd-pcm-oss you can use
applications which only support the OSS /dev/dsp interface without
breaking support for regular ALSA apps.

Regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Sometimes a feeling is all we humans have to go on.
		-- Kirk, "A Taste of Armageddon", stardate 3193.9

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#201156

FromCurt <curty@free.fr>
Date2018-10-11 10:00 +0200
Message-ID<wHE30-1XM-1@gated-at.bofh.it>
In reply to#201143
On 2018-10-10, Michael Lange <klappnase@freenet.de> wrote:
>
> snd-pcm-oss *is* an alsa module, you won't get anywhere with that without
> loading the proper alsa drivers for your sound card too.
>
>> 
>> https://wiki.debian.org/ALSA#ALSA_and_OSS
>> 
>>  If you don't unload all OSS modules then ALSA modules will not be able
>>  to initialise (or work properly) because the OSS driver will be futzing
>>  with the sound hardware that the ALSA driver needs to control. If you
>>  see a message about "sound card not detected" and you are sure you have
>>  the right ALSA driver, the presence of an OSS module could be the
>>  reason.
>> 
>> Maybe this, as they say in French, explains that. Or maybe not. I dunno.
>
> No, this refers to the old OSS sound drivers which I think today are no
> longer available in the linux kernel. With snd-pcm-oss you can use
> applications which only support the OSS /dev/dsp interface without
> breaking support for regular ALSA apps.
>

I see. Thanks for the clarification.

-- 
"Now she understood that Anna could not have been in lilac, and that her charm
was just that she always stood out against her attire, that her dress could
never be noticeable on her." Leo Tolstoy, Anna Karenina

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#201111

From"Martin McCormick" <martin.m@suddenlink.net>
Date2018-10-10 14:40 +0200
Message-ID<wHlWq-8iJ-3@gated-at.bofh.it>
In reply to#201108
Michael Lange <klappnase@freenet.de> writes:
> Hi,
> 

> > Actually that would be '/dev/snd*' not '/dev/dsp' (the latter being the
> > old, obsolete oss sound device from way back when, which I doubt would
> > exist on Stretch at all).
> 
> /dev/dsp surely exists in case the snd-pcm-oss driver module is loaded.
> 
> Regards
> 
> Michael
> 
> 
> .-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

--. --- --- -.. .- -.. ...- .. -.-. . .-.-.-

	Sometimes I am amazed at what I miss and it's right under
my nose.  I am running Debian stretch with mostly no problems so
I looked for /dev/snd and there it is and it is a directory.

	I also have /dev/dsp on this system because 
snd-pcm-oss driver module is also loaded.  The reason is a long
story but the old and new systems seem to coexist without
trouble.

	Some years ago, I wrote some sound applications in gcc
that use /dev/dsp or /dev/dspx depending on the number of your
sound device and I made the mistake of using ancient examples of
how to code access to /dev/dsp devices such as the ioctl commands
to set whether one wants stereo, mono and what sampling rate to
use.

	I off-handedly wondered where the sound stuff went but
figured it was in /dev somewhere but wasn't forced to look yet.

	I don't know how I missed /dev/snd but I kept looking for
anything with pcm or dsp so, of course, never found it that way.

Thanks!  Yes, I am my version of awake.

Martin McCormick WB5AGZ

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