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[yanuar <290506@xxxxxxxxxxxxxxxxxx>]

** Changed in: libv4l (Ubuntu)
     Assignee: (unassigned) => yanuar (dreamerthe12)

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https://bugs.launchpad.net/bugs/290506

Title:
  cheese malfunctioning with UVCVIDEO webcams (was cheese doesn't show
  v4l2 video output and disables output on gstreamer-based apps ran
  afterwards)

Status in Cheese Camera Application:
  Unknown
Status in Release Notes for Ubuntu:
  Invalid
Status in “cheese” package in Ubuntu:
  Invalid
Status in “gstreamer0.10” package in Ubuntu:
  Invalid
Status in “libv4l” package in Ubuntu:
  Fix Released
Status in “linux” package in Ubuntu:
  Fix Released
Status in “cheese” source package in Intrepid:
  Invalid
Status in “gstreamer0.10” source package in Intrepid:
  Invalid
Status in “libv4l” source package in Intrepid:
  Invalid
Status in “linux” source package in Intrepid:
  Fix Released

Bug description:
  Binary package hint: cheese

  == Regression details ==
  Discovered in version: 8.10RC
  Last known good version: 8.04.1

  gstreamer-based apps (gstreamer-properties, cheese) doesn't show the
  v4l2 video output.

  cheese can configure webcam (Dell Inspiron integrated webcam) but it
  does not provide any output. after some time the apps hang.

  
  vlc can play with the webcam (including sound).

  the hardware:

  [   11.835433] uvcvideo: Found UVC 1.00 device Laptop Integrated Webcam (05a9:2640)
  [   11.835731] uvcvideo: Failed to query (135) UVC control 1 (unit 0) : -32 (exp. 26).
  [   11.893113] input: Laptop Integrated Webcam as /devices/pci0000:00/0000:00:1a.7/usb3/3-1/3-1:1.0/input/input11
  [   12.025138] usbcore: registered new interface driver uvcvideo

  
  Steps to Reproduce it:

  1.- Start ekiga, you should get local video
  2.- Start gstreamer-properties, you should get video at the tab and video test button
  3.- Start cheese and it would hang after a while
  4.- Kill cheese, remove the uvcvideo (most probably this would happen with other modules, pwc, gspca) driver and reload it again
  5.- Try again with ekiga or gstreamer-properties, it would work
  6.- Start cheese, go to properties and configure to the lowest resolution available. Cheese would hang, kill it and it would start again.  
  Now you've got low resolution video

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