Quick question about sound drivers (esp. snd_hda)

Chris Rees utisoft at gmail.com
Sat Mar 12 09:46:36 UTC 2011

On 12 March 2011 08:34, Bruce Cran <bruce at cran.org.uk> wrote:
> On Fri, 11 Mar 2011 15:29:44 -0500
> Brian Waters <brianmwaters at 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!


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