Yep, this seems to be a bug in compiz' multi-head functionality. The flickering/blanking when disabling the laptop LVDS may be an unrelated bug. (It is probably either the kernel KMS or an issue in gnome-display-properties.) I'd suggest filing that as a separate bug report.
** Package changed: xserver-xorg-video-intel (Ubuntu) => compiz (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. https://bugs.launchpad.net/bugs/727382 Title: Unable to correctly display Image on 24" External Monitor _______________________________________________ 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