some USB audio help please?

[Net Llama!]

Kurt Wall wrote:
> 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 I guess devices.txt is out of date, as I get similar results on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

Excellent, thanks guys.  Next question is what are the correct ownership 
  & permissions for all of these devices (dsp, mixer, audio)?  The 2 
sets listed above aren't identical.  I'm *NOT* using KDE, just xfce, so 
I think that the whole take and give scripts aren't applicable (although 
i could be wrong).



-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
L. Friedman                       	       netllama at linux-sxs.org
Linux Step-by-step & TyGeMo: 		    http://netllama.ipfox.com

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