Re: kern/43806: No sound on Thinkpad T510

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sat, Aug 28, 2010 at 07:02:58AM +0000, le chapelain germain wrote:
> I don't know if I am using hdaudio, I guess that's what I am trying to do.
> I am using 5.99.39 as well.
> 
> bash-4.1$ dmesg | grep -i audio
> hdaudio0 at pci1 dev 0 function 1: HD Audio Controller
> hdaudio0: interrupting at ioapic0 pin 16
> ...
> bash-4.1$ ls /dev/hd*
> ls: /dev/hd*: No such file or directory
> 
> How is it possible to see the line in dmesg and while not seeing the node in 
> /dev ?

device nodes are just files, you can give them the name you want (they
don't have to match the device's name). For example, the device node for
device com0 is /dev/tty00.
Also, not all device instance have a device node associated. For example,
network devices don't have a device node in /dev (they're accessible
via another namespace).
For this specific case, audio adapters are attached to the audio(4)
framework, and are acessible through the generic nodes /dev/audio* and
/dev/sound*.


-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--