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Date:      Thu, 8 Mar 2012 10:27:36 +0100
From:      Xavier FreeBSD questions <>
Subject:   pwcview(1) don't work
Message-ID:  <>

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Hi to all,

I have:

> pkg_info | grep webc
evolution-webcal-2.32.0_1 Webcal(endar) handler for gnome
pwcview-1.4.1_4     The Video4Linux PWC webcam viewer
webcamd-     A port of Linux USB webcam and DVB drivers into
> kldstat | grep cuse
 3    1 0xc12a4000 5c08     cuse4bsd.ko

casa# webcamd -d ugen4.6 -i 0 -v 0
: v3.2:USB Acecad Flair tablet driver
: v2.3 (May 2, 2007):Aiptek HyperPen USB Tablet Driver (Linux 2.6.x)
: Bryan W. Headley/Chris Atenasio/Cedric Brun/Rene van Paassen
GTCO usb driver version: 2.00.0006: v0.0.2:USB KB Gear JamStudio Tablet
: v1.52:USB Wacom tablet driver
lirc_dev: IR Remote Control driver registered, major 14
IR NEC protocol handler initialized
IR RC5(x) protocol handler initialized
IR RC6 protocol handler initialized
IR JVC protocol handler initialized
IR Sony protocol handler initialized
IR RC5 (streamzap) protocol handler initialized
IR LIRC bridge handler initialized
: 2.2.1:ATI/X10 RF USB Remote Control
Linux video capture interface: v2.00
em28xx driver loaded
Em28xx: Initialized (Em28xx dvb Extension) extension
USBVision USB Video Device Driver for Linux : 0.9.11
pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
pvrusb2: Debug mask is 31 (0x1f)
cpia2: V4L-Driver for Vision CPiA2 based cameras v3.0.1
: Zoran 364xx
au0828 driver loaded
USB Video Class driver (1.1.1)
: 0.4.7:D-Link DSB-R100 USB FM radio driver
: 0.0.2: A driver for the TEA5764 radio chip for EZX Phones.
b2c2-flexcop: B2C2 FlexcopII/II(b)/III digital TV receiver chip loaded
dib0700: loaded with support for 21 different device-types
virtual DVB server adapter driver, version 1.0-hps, (c) 2011 Hans Petter
Attached ugen4.6[0] to cuse unit 0
em28xx: New device @ 480 Mbps (eb1a:2820, interface 0, class 0)
em28xx #0: chip ID is em2820 (or em2710)
em28xx #0: board has no eeprom
em28xx #0: found i2c device @ 0x4a [saa7113h]
em28xx #0: Your board has no unique USB ID.
em28xx #0: A hint were successfully done, based on i2c devicelist hash.
em28xx #0: This method is not 100% failproof.
em28xx #0: If the board were missdetected, please email this log to:
em28xx #0:     V4L Mailing List  <>
em28xx #0: Board detected as EM2860/SAA711X Reference Design
em28xx #0: Identified as EM2860/SAA711X Reference Design (card=19)
em28xx #0: Config register raw data: 0x00
em28xx #0: v4l2 driver version 0.1.3
em28xx #0: V4L2 video device registered as video0
em28xx_dvb: This device does not support the extension
Creating /dev/video0

casa# chmod 666 /dev/video0

And, can't play /dev/video0 :

> pwcview
Webcam set to: 320x240 (sif) at 5 fps
libv4l2: error queuing buf 0: Invalid argument
libv4l2: error queuing buf 1: Invalid argument
libv4l2: error queuing buf 2: Invalid argument
libv4l2: error queuing buf 3: Invalid argument
libv4l2: error reading: Device busy
Error reading from webcam: Device busy

Somebody can help me ?


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