** Description changed: + xv driver is having playback issue with webcam capture, it plays green + screen. - 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. + It was firstly found 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. + After completely installed 12.04.3 system or upgrade your X driver stack to lts-raring, + on system with haswell chipset, webcam capture will playback with green screen. + To reproduced this problem we could use: + + guvcview + + luvcview + + mplayer tv:///dev/video0 -vo xv + + vlc v4l2:/ //dev/video0 -V xv + + + On the same hardware system, + + To validate that webcam works fine with other output drivers: + + luvcview -w + + mplayer tv:///dev/video0 -vo x11 + + vlc v4l2:/ //dev/video0 -V glx + + + By downgrade to xserver-xorg-lts-quantal also fixes this issue, + its also verified on 12.04.2 stock image with the same webcam. 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)
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-lts-raring in Ubuntu. https://bugs.launchpad.net/bugs/1220645 Title: Webcam capture plays green screen through xv on Haswell platform To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1220645/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
