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Date:      Wed, 16 May 2012 19:46:39 +0200
From:      Hans Petter Selasky <hselasky@c2i.net>
To:        freebsd-multimedia@freebsd.org, Matthias Apitz <guru@unixarea.de>
Subject:   Re: Logitech HD Webcam Pro c910 && snd_uaudio does not work
Message-ID:  <201205161946.39956.hselasky@c2i.net>
In-Reply-To: <20120516160807.GA2246@tinyCurrent>
References:  <20120513155939.GA4313@tinyCurrent> <201205141721.25641.hselasky@c2i.net> <20120516160807.GA2246@tinyCurrent>

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On Wednesday 16 May 2012 18:08:07 Matthias Apitz wrote:
> El d=EDa Monday, May 14, 2012 a las 05:21:25PM +0200, Hans Petter Selasky=
=20
escribi=F3:
> > > Hi,
> > > The system where it does not work (r214444) does not have the usbdump
> > > utility; is there any debug in snd_uaudio to enable?
> > > Thanks
> >=20
> > Yes,
> >=20
> > hw.usb.uaudio.debug=3D15
> >=20
> > If compiled with USB_DEBUG set.
>=20
> This gives the following messages:
>=20
> on plug-in:
>=20
> May 16 18:00:36 tinyCurrent kernel: pcm1: <USB audio> on uaudio0
> May 16 18:00:36 tinyCurrent kernel: uaudio_attach_sub: emulating master
> volume May 16 18:00:36 tinyCurrent kernel: uaudio_mixer_init_sub:
> May 16 18:00:36 tinyCurrent kernel: uaudio_mixer_bsd2value: type=3D0x002
> val=3D-18176 min=3D-18176 max=3D-4864 val=3D-18176 May 16 18:00:36 tinyCu=
rrent
> kernel: uaudio_mixer_write_cfg_callback: May 16 18:00:36 tinyCurrent
> kernel: uaudio_mixer_write_cfg_callback: May 16 18:00:36 tinyCurrent
> kernel: uaudio_chan_init: endpoint=3D0x86, speed=3D32000, iface=3D1 alt=
=3D3
> May 16 18:00:36 tinyCurrent kernel: uaudio_chan_init: fps=3D1000 sample_r=
em=3D0
> May 16 18:00:36 tinyCurrent root: /usr/local/etc/rc.d/webcamd: WARNING:
> failed to start webcamd May 16 18:00:36 tinyCurrent root: Unknown USB
> device: vendor 0x046d product 0x0821 bus uhub4 May 16 18:00:37 tinyCurrent
> last message repeated 2 times
>=20
> (now started in another window dd if=3D/dev/dsp1.0 of=3D/tmp/snd)
>=20
>=20
> May 16 18:02:08 tinyCurrent kernel: uaudio_chan_record_callback:
> transferred 0 bytes May 16 18:02:13 tinyCurrent last message repeated 623
> times
>                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> May 16 18:02:13 tinyCurrent kernel: pcm1: chn_read():
> pcm1:virtual:dsp1.vr0: record interrupt timeout, channel dead
>=20
> Thanks
>=20
> 	matthias

Hi,

I believe this is a firmware bug. You should try to report to the manufactu=
rer=20
of the webcam.

=2D-HPS



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