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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1422680

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1422680

Title:
  v4l2 regression: T420s built in camera stopped working

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  The  Chicony Electronics Camera (as built into for example Lenovo
  T420s) stopped working somewhere between kernel 3.2 and 3.13.

  I use both kernels in Ubuntu 12.04, and the camera works with the
  older one, so I filed the bug here as I don't know when it stopped
  working.

  The camera is still recognized by v4l2, properties can be accessed by
  v4l2-ctl for example, and seemed correctly reported back (pixelformats
  for exmaple match my expectation).  But the frame capturing intself
  will always fail with 'device busy'.

  Usb IDs:
  04f2:b221 Chicony Electronics Co., Ltd integrated camera

  
  What further information would be useful?

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