Hi, I have now fixed this problem for me.
Looking at what happens I believe the problem is the Xinerama is designed for stitching multiple monitors together and so is not very good at stitching together monitors which have already been stitched together. I will publish a full walk through once I've got it working fully on my system (and not just the live CD) but it is fairly straightforward. As I am sure you have seen elsewhere on the internet it is suggested that you need to create a device for each port on your graphics cards and give the devices the same BusId (but different identifiers) and then andd the Screen 0 and Screen 1 options to differentiate between the ports. I have found that this doesn't quite work. You also need to add Option "ZaphodHeads" "name of port" #e.g. DVI-0, DVI-1, DVI-2, VGA-0, VDA-1 etc Then it should work fine. A copy of my fully working xorg.conf file is available at http://www.etothepii.co.uk/xorg.conf What this does (which you will see if you leave xinerma off) is allow the creation of completely seperate X sessions. So in my configuration with xinerama off I get 4 seperate x sessions each of which is capable of having the mouse in it but between which windows can not be dragged. As a consequence when you enable Xinerama it is only being asked to stitch single monitors together and so works fine. -- wrong xinerama scroll/pan using two cards three monitors https://bugs.launchpad.net/bugs/591104 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in ubuntu. _______________________________________________ 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
