kern/152622: [pcm] uaudio recording problem
Hans Petter Selasky
hselasky at c2i.net
Sun Apr 10 11:20:10 UTC 2011
The following reply was made to PR kern/152622; it has been noted by GNATS.
From: Hans Petter Selasky <hselasky at c2i.net>
To: Thierry Thomas <thierry at freebsd.org>
Cc: freebsd-multimedia at freebsd.org,
FreeBSD-gnats-submit at 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 at 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
More information about the freebsd-multimedia
mailing list