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Date: Sun, 10 Apr 2011 11:20:09 GMT
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To: freebsd-multimedia@FreeBSD.org
From: Hans Petter Selasky <hselasky@c2i.net>
Cc: 
Subject: Re: kern/152622: [pcm] uaudio recording problem
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The following reply was made to PR kern/152622; it has been noted by GNATS.

From: Hans Petter Selasky <hselasky@c2i.net>
To: Thierry Thomas <thierry@freebsd.org>
Cc: freebsd-multimedia@freebsd.org,
 FreeBSD-gnats-submit@freebsd.org
Subject: Re: kern/152622: [pcm] uaudio recording problem
Date: Sun, 10 Apr 2011 13:11:22 +0200

 On Sunday 10 April 2011 12:48:27 Thierry Thomas wrote:
 > On sun 10 apr 11 at 12:18:20 +0200, Hans Petter Selasky <hselasky@c2i.net>
 > 
 >  wrote:
 > > It looks like your recording device does not have a volume control. If
 > > you:
 > > 
 > > dd if=/dev/dsp1.0 of=/dev/dsp0.0 bs=64
 > > 
 > > Do you then hear anything?
 > 
 > Nothing, but an error is displayed:
 > 
 > $ dd if=/dev/dsp1.0 of=/dev/dsp0.0 bs=64                                   
 >                       ~ dd: /dev/dsp1.0: Invalid argument
 > 0+0 records in
 > 0+0 records out
 > 0 bytes transferred in 5.000121 secs (0 bytes/sec)
 > 
 > $ ll /dev/dsp1.0 /dev/dsp0.0
 > crw-rw-rw-  1 root  wheel    0, 137  9 avr 17:01 /dev/dsp0.0
 > crw-rw-rw-  1 root  wheel    0, 160 10 avr 12:43 /dev/dsp1.0
 > 
 > Best regards,
 
 Could you show dmesg with USB debugging on for USB audio while doing this. 
 Maybe the webcam needs to be running before you get audio.
 
 --HPS