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Thread: System76 laptop (serp7) webcam problem with kernel update

  1. #1
    Join Date
    Aug 2014
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    3

    System76 laptop (serp7) webcam problem with kernel update

    The webcam on my System76 laptop (serp7) worked fine with Ubuntu 12.04 but after upgrading to 13.10 and later to 14.04, the webcam has stopped working. I don't even have a /dev/video0 directory. If I use a USB webcam, it works fine. I've attached my dmesg, lsusb, and lsmod outputs. I know it worked before and it's not because I didn't press Fn+F10. Nothing in the output of dmesg, lsusb, or lsmod changes after pressing Fn+F10. Was support for this webcam depricated in the kernel update? How would I find out what chipset my camera is if it's not showing up in any of the outputs?

    Thanks.
    Attached Files Attached Files

  2. #2
    Join Date
    Aug 2006
    Location
    gypsy encampment
    Beans
    433
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: System76 laptop (serp7) webcam problem with kernel update

    My SerP7 running 12.04.4 has the same issue. I haven't noticed until now because I rarely use my webcam. Cheese doesn't activate my webcam, but using
    Code:
     gstreamer-properties
    , selecting video tab and cicking the "Test" button activates the webcam.

    I wonder what's going on? The webcam formerly worked fine!

    UPDATE: After trying out some older kernels which complained about missing GLX, Cheese is now working for me with the current kernel in 12.04.4. I don't know what cause it to stop or start working again...
    Last edited by MoebusNet; August 5th, 2014 at 04:14 PM. Reason: update
    System76 Serval Pro 7: Ubuntu 14.04; Dell Latitude D800: Lubuntu 14.04

    Ubuntu problems? http://www.googlubuntu.com/

  3. #3
    Join Date
    Aug 2006
    Location
    gypsy encampment
    Beans
    433
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: System76 laptop (serp7) webcam problem with kernel update

    If it will help, I've booted my serp7 from Ubuntu 14.04.1 Live-USB. Cheese is working and the webcam is working. You may want to try booting from Live-media just to make sure this isn't a hardware problem. Hope this helps!
    System76 Serval Pro 7: Ubuntu 14.04; Dell Latitude D800: Lubuntu 14.04

    Ubuntu problems? http://www.googlubuntu.com/

  4. #4
    Join Date
    Aug 2014
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    3

    Re: System76 laptop (serp7) webcam problem with kernel update

    Thanks for the help! When I try

    Code:
    gstreamer-properties
    with the "video for linux (v4l2)" or the "custom" inputs, it replies with:

    Video for Linux 2 (v4l2): Cannot identify device '/dev/video0'.
    and

    Custom: Cannot identify device '/dev/video0'.
    so I think it's a more fundamental driver or hardware problem since it's not even recognizing the device in any of the logs (lsusb, dmesg) even though I toggle Fn+F10 and recheck them. I'll post again after I've tested the live image (it's downloading now).

  5. #5
    Join Date
    Oct 2007
    Location
    Aurora, CO
    Beans
    2,563
    Distro
    Ubuntu

    Re: System76 laptop (serp7) webcam problem with kernel update

    Try this procedure to ensure that the webcam is turned on:

    Close any applications that can use the webcam, including Skype (if applicable) or browsers. Open Cheese, or a similar Webcam booth application, and see if you get video. If not, close it, press Fn+F10, then open Cheese again and see if it now works.
    Ian Santopietro - System76 Technical Support.
    Open a Support Ticket!
    Ask a Sales Question!

  6. #6
    Join Date
    Aug 2014
    Beans
    3

    Re: System76 laptop (serp7) webcam problem with kernel update

    Well, the live boot image to 12.04 didn't work either. I guess it was a hardware problem. Thanks for all you're help! (and I tried cheese before and after pressing Fn+F10 and it made no difference. /dev/video0 was still missing and nothing showed up with lsusb)

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