I tried Option "EXAPixmaps" "off", but with no change. However, further experimentation has revealed that if you use Monitor Preferences to set both monitors to 1280x1024, the screens both behave perfectly - no trails, no weird colour blocks, everything properly refreshed.
Not really an answer as I need to use my screens at max res ie laptop=1920 and Samsung ext LCD=1600x1200, but this must be a clue to what is wrong ? Looks like maybe a video memory addressing problem ? Can anyone suggest settings that might be tweaked to try to get round this issue please ? -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/576288 Title: second screen in dualhead setup doesn't refresh properly until reconfigured _______________________________________________ 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
