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From: Chris Rees <utisoft@gmail.com>
Date: Sat, 12 Mar 2011 09:46:04 +0000
Message-ID: <AANLkTimZuixk7ufa4UYGdNN59ePMQAWKqmNwrpFP8uL5@mail.gmail.com>
To: Bruce Cran <bruce@cran.org.uk>
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Cc: Brian Waters <brianmwaters@gmail.com>, freebsd-questions@freebsd.org
Subject: Re: Quick question about sound drivers (esp. snd_hda)
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On 12 March 2011 08:34, Bruce Cran <bruce@cran.org.uk> wrote:
> On Fri, 11 Mar 2011 15:29:44 -0500
> Brian Waters <brianmwaters@gmail.com> wrote:
>
>> It seems to me that under /dev, you can have the following
>> sound-related device files:
>>
>> dspX
>> dspX.Y
>> (among others)
>>
>> I'm having some trouble getting my sound to work (Dell Inspiron
>> E1705/Inspiron 9400 with Sigmatel STAC9220 codec). I've read the
>> manpages for snd and snd_hda (which is the appropriate driver), and
>> increased the verbosity of the drivers and read the kernel log and
>> /dev/sndstat, but I still can't quite wrap my head around everything.
>
> If the driver appears to load, then /dev/dsp should be created
> automatically when something tries to access it (e.g. cat /dev/random
>> /dev/dsp).
>

An important point that I had trouble with recently; the dsp* files don't
appear until they are read/written to!

Chris