some USB audio help please?

[Kurt Wall]

Scribbling feverishly on April 25, David A. Bandel managed to emit:
> On Thu, 25 Apr 2002 18:29:00 -0700
> begin  "Net Llama!" <netllama at linux-sxs.org> spewed forth:
> 
> > I'm still tinkering with getting my Philps 690 USB webcam working, and 
> > i've made alot of progress.  However, when i record a movie in avi 
> > format, no sound is being picked up, or rather all i hear is alot of 
> > white noise.  Now i thought maybe that the mic on the camera was crappy,
> > but i literally put the camera up to my mouth, and talked into it, and 
> > still got nothing.  I've got the usb 'audio' module loaded, so i'm 
> > honestly not sure what the problem is.  I looked through messages a bit,
> > and found this entry:
> > Apr 25 18:23:45 hal kernel: usbaudio: registered dsp 14,35
> > 
> > I'm kinda guessing those numbers might be major/minor, however in 
> > /usr/src/linux/Documentation/devices.txt there doesn't appear to be a 
> > major 14, minor 35.  It goes from a minor 34 to a minor 50 (both of 
> > which are midi devices).  Anyone have any ideas or suggestions?
> 
> [david at tole david]$ ls -al /dev/sound
> total 0
> drwxr-xr-x    1 root     root            0 Dec 31  1969 ./
> drwxr-xr-x    1 root     root            0 Dec 31  1969 ../
> crw-------    1 root     root      14,   4 Dec 31  1969 audio
> crw-------    1 david    root      14,   3 Dec 31  1969 dsp
> crw-rw-rw-    1 root     root      14,  19 Dec 31  1969 dsp1
> crw-rw-rw-    1 root     root      14,  35 Dec 31  1969 dsp2
> crw-rw-rw-    1 root     root      14,   5 Dec 31  1969 dspW
> crw-rw-rw-    1 root     root      14,   2 Dec 31  1969 midi
> crw-------    1 david    root      14,   0 Dec 31  1969 mixer
> crw-rw-rw-    1 root     root      14,  16 Dec 31  1969 mixer1
> crw-------    1 david    root      14,   1 Dec 31  1969 sequencer
> crw-------    1 david    root      14,   8 Dec 31  1969 sequencer2
> 
> That help?  I'm running devfsd, so this is all dynamic, nothing I've
> created.

Hmm. I guess devices.txt is out of date, as I get similar results on
an old-fashioned (non-devfs) system:

kwall at marta:~$ ls -l /dev/dsp?
crw-rw-rw-    1 root     root      14,   3 Apr 21 08:10 /dev/dsp0
crw-rw-rw-    1 root     sys       14,  19 Jul 18  1994 /dev/dsp1
crw-rw-rw-    1 root     root      14,  35 Apr 21 08:10 /dev/dsp2
crw-rw-rw-    1 root     root      14,  51 Apr 21 08:10 /dev/dsp3
crw-rw-rw-    1 root     root      14,  67 Apr 21 08:10 /dev/dsp4
crw-rw-rw-    1 root     root      14,  83 Apr 21 08:10 /dev/dsp5
crw-rw-rw-    1 root     root      14,  99 Apr 21 08:10 /dev/dsp6
crw-rw-rw-    1 root     root      14, 115 Apr 21 08:10 /dev/dsp7
crw-rw-rw-    1 root     root      14, 131 Apr 21 08:10 /dev/dsp8
crw-rw-rw-    1 root     root      14, 147 Apr 21 08:10 /dev/dsp9

Kurt
-- 
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