[Bug 1220645] Re: Webcam capture plays green screen on Haswell platform through xv

[Yung Shen]

** Summary changed:

- Webcam view shows green screen
+ Webcam capture plays green screen on Haswell platform through xv

** Summary changed:

- Webcam capture plays green screen on Haswell platform through xv
+ Webcam capture plays green screen through xv on Haswell platform

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https://bugs.launchpad.net/bugs/1220645

Title:
  Webcam capture plays green screen through xv on Haswell platform

Status in “ubiquity” package in Ubuntu:
  Won't Fix
Status in “xorg-lts-raring” package in Ubuntu:
  New

Bug description:
  
  When using stock 12.04.3 image, during on installing step of "Choose a Picture",
  the webcam view only playback with green screen, but it still can capture correctly if you hit the button.

  This issue also affected to system testing tool, when running webcam testing:
  /usr/share/checkbox/scripts/camera_test -t display

  This could be also reproduced by using guvcview.
  However Cheese does not affected when upgrading to raring X stack.

  To solve this issue, could simply downgrade to xserver-xorg-lts-quantal,
  this is also verified on 12.04.2 stock image, same webcam works normally.

  
  Affected webcams:

  1bcf:289e Sunplus
  1bcf:2985 Sunplus
  0c45:64af Microdia
  0c45:64ad Microdia
  064e:812c Suyin


  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: xserver-xorg-lts-raring 1:7.7+1ubuntu4~precise1
  ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
  Uname: Linux 3.8.0-29-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.1
  Architecture: amd64
  Date: Wed Sep  4 06:59:59 2013
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: xorg-lts-raring
  UpgradeStatus: No upgrade log present (probably fresh install)

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