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[Gregor Jasny <gjasny@xxxxxxxxxxxxxx>]

Hi,

does it also happen if you use qv4l2?
If yes, please open the device on raw mode (somewhere in the file menu). 
Does it happen now, too?

Thanks,
Gregor

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https://bugs.launchpad.net/bugs/1421847

Title:
  No webcam video input ubuntu 14.04 x86_64

Status in cheese package in Ubuntu:
  New
Status in guvcview package in Ubuntu:
  New
Status in v4l-utils package in Ubuntu:
  New

Bug description:
  I tried different webcams on different machines with Ubuntu 14.04 x86,
  x86_64 and Ubuntu 14.10 x86_64.

  This is a BIG trouble : No video on 14.04 x86_64 systems !

  Latest tests :
  Ubuntu 14.04 x86_64
  Lowlatency Kernel and Generic kernel on a second machine.

  lsusb : Bus 003 Device 003: ID 093a:2621 Pixart Imaging, Inc. PAC731x Trust Webcam
  No image on /dev/video0

  vlc : "main demux error: option v4l2-exposure does not exist"
  guvcview : "Could not grab image (select timeout): Resource temporarily unavailable"
  cheese : no output
  skype : nothing

  Same cam pluged on my netbook under Ubuntu x86 : worked out of the box with the same softwares.
  Tried on a Ubuntu 14.10 x86_64 Laptop : perfect

  Two of my customers have the same problem with logitech webcams under
  Ubuntu 14.04 x86_64.

  Any idea ?
  I can't ask them to use normal versions with only 6 months lifetime !

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: libv4l-0 1.0.1-1
  ProcVersionSignature: Ubuntu 3.13.0-46.75-lowlatency 3.13.11-ckt15
  Uname: Linux 3.13.0-46-lowlatency x86_64
  NonfreeKernelModules: nvidia wl
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Feb 13 22:16:16 2015
  InstallationDate: Installed on 2014-04-10 (309 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140410)
  SourcePackage: v4l-utils
  UpgradeStatus: No upgrade log present (probably fresh install)

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