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[Patrick Brueckner <1445039@xxxxxxxxxxxxxxxxxx>]

rhwlo's workaround partially fixes the issue, but apparently only for
the first picture taken within the session. The second picture will fail
again with the exact same message.

When I create a new session (using su - `whoami`) it works fine for one
picture, but a second try will not, and apparently it doesn't matter
wether or not I restart cheese.

As soon as I close that session and create a new one, it works fine -
for a single picture.

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https://bugs.launchpad.net/bugs/1445039

Title:
   Device '/dev/video0' is busy

Status in cheese package in Ubuntu:
  Confirmed

Bug description:
  First time I run cheese during the day, an attempt to take a picture
  typically results in an error being displayed on a black background in
  the preview pane "There was an error playing video from the webcam"
  (odd for two reasons, one I'm taking a picture, not video, and two...
  it's an error message that indicated something indeed went wrong)

  (cheese:2506): cheese-WARNING **: Device '/dev/video0' is busy: gstv4l2object.c(2838): gst_v4l2_object_set_format (): /GstCameraBin:camerabin/GstWrapperCameraBinSrc:camera_source/GstBin:bin18/GstV4l2Src:video_source:
  Call to S_FMT failed for YU12 @ 1280x720: Device or resource busy

  webcam:
                        description: Video
                        product: HD WebCam
                        vendor: NC.21411.01N415006E5LM0002
                        physical id: 1
                        bus info: usb@3:1.1
                        version: 0.02
                        capabilities: usb-2.00
                        configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s

  linux:
  Linux Hedy 3.19.0-13-generic #13-Ubuntu SMP Thu Apr 9 22:56:40 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

  ubuntu : 15.04

  cheese:
    Installed: 3.14.1-2ubuntu4
    Candidate: 3.14.1-2ubuntu4

  The timer goes off, flash goes off, but no photo is saved in my
  ~/Webcam directory.

  Attempts to take video, or attempts to take a few pictures using root
  seem to clear this problem up and after I have done so, cheese seems
  to be initialized correctly, and it works fine for awhile.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: cheese 3.14.1-2ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-13.13-generic 3.19.3
  Uname: Linux 3.19.0-13-generic x86_64
  ApportVersion: 2.17.1-0ubuntu1
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Thu Apr 16 10:20:25 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-07-09 (280 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Alpha amd64 (20140708)
  SourcePackage: cheese
  UpgradeStatus: No upgrade log present (probably fresh install)

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