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Thread: Failed to open video device /dev/video0

  1. #1
    Join Date
    Jan 2007
    Beans
    Hidden!
    Distro
    Kubuntu 11.04 Natty Narwhal

    Failed to open video device /dev/video0

    Hi all,
    have an old USB-Pencam:

    Code:
    lsusb
    Bus 008 Device 003: ID 04fc:504a Sunplus Technology Co., Ltd Aiptek Mini PenCam 1.3
    Code:
    dmesg
    [   64.570015] usb 8-1: new full speed USB device using uhci_hcd and address 3
    [   64.700025] usb 8-1: device descriptor read/64, error -71
    [   65.355672] usb 8-1: configuration #1 chosen from 1 choice
    [   65.362553] Linux video capture interface: v2.00
    [   65.363911] gspca: main v2.6.0 registered
    [   65.364540] gspca: probing 04fc:504a
    [   70.185157] gspca: probe ok
    [   70.185229] gspca: probing 04fc:504a
    [   70.185256] usbcore: registered new interface driver sunplus
    [   70.185259] sunplus: registered
    But,when opening /dev/,there is nothing,no video0 or something.
    I am on Karmic.Last time I used this camera was under Edgy where I had to install spca5xx-source and gspca-source,and everything was fine....any ideas?

    Digikam sees the camera:

    Title: Sunplus Technology Co., Ltd Aiptek Mini PenCam 1.3
    Model: Aiptek Pencam
    Port: usb:
    Path: /


    and works,means,it can import jpeg/AVI...
    Wanted to run motion with it,which complains:

    Code:
    [1] Failed to open video device /dev/video0: 
    [1] Could not fetch initial image from camera
    ..and I need a /device/ address for the motion.conf file...

    Thanks for your time..

    -------------------------------------------------------------------------------------------
    SOLVED!!

    gspca is now integrated in the kernel,but it works only after unloading the module and reloading it while camera is plugged in...

    sudo modprobe -r gspca_sunplus
    sudo modprobe gspca_sunplus
    Last edited by realzippy; March 26th, 2010 at 07:38 PM.

  2. #2
    Join Date
    Sep 2009
    Beans
    2,333

    Re: Failed to open video device /dev/video0

    wxcam has motion detection
    http://wxcam.sourceforge.net/

    did you try to run the gstreamer-properties see if it will set the dev video

    open a terminal type, gstreamer-properties click enter
    click video try v4l1 and v4l2
    click the bottom test button for each 1

    hope this helps

  3. #3
    Join Date
    Jan 2008
    Location
    Alabama, USA
    Beans
    40
    Distro
    Xubuntu

    Re: Failed to open video device /dev/video0

    gspca is now integrated in the kernel,but it works only after unloading the module and reloading it while camera is plugged in...

    sudo modprobe -r gspca_sunplus
    sudo modprobe gspca_sunplus
    I'm running Ubuntu 9.10 using the PenCam as well. I can confirm that this works. Here is what I did:

    1. Boot into Ubuntu... logged in.
    2. Connected PenCam over USB
    3. (scratch head... google.com)
    4. Read this thread.
    5. Ran the two commands above.
    6. sudo gstreamer-properties
    7. Clicked the "Video" tab & tested my device. It works!

    Thanks for figuring this out!

    My lsusb output
    Code:
    Bus 004 Device 003: ID 04fc:504a Sunplus Technology Co., Ltd Aiptek Mini PenCam 1.3
    Computers are like air conditioners. They stop working properly if you open Windows.

  4. #4
    Join Date
    Jun 2008
    Beans
    145

    Re: Failed to open video device /dev/video0

    sudo modprobe -r gspca_sunplus
    sudo modprobe gspca_sunplus
    This works for me for my Philips SPC 710NC camera (gspca_sunplus replaced by gspca_sonixj) to start the microphone. Until recently the microphone was available after boot but for some reason stopped, found this running Skype, no mic. My first work-around was under Skype to test the video which started the mic. The modeprobe fix is better but I now need to include in the boot sequence. I'm sure this wasn't a problem up until end of Oct 2010 (I keep my Ubuntu 10.04 system fully up to date), so what changed?
    Asus M3N78-EMH HDMI, AMD2 Athlon 64, 4GB RAM
    2xSamsung Spinpoint 500GB HDD, OCZ Vertex 30GB SSD, Nova T-500 DVB-T, TechniSat SkyStar HD2 DVB-S, UR86E X10 RF Remote, Mythbuntu 8.10, Marantz SR5002 AV Amp

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