<div dir="ltr"> <div class="gmail_quote">On Wed, Jul 16, 2008 at 11:18 AM, James Purdy <<a href="mailto:storgeek@gmail.com" target="_blank">storgeek@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div dir="ltr">Ritesh, I'm currently using a similar setup, I have a RV370 PCI-E and 9250 PCI pushing 4 monitors (2x 19" 16:9 and 2x 19" 4:3). I have attached a copy of my xorg.conf for you to dissect. Hopefully it helps. Caveats: 1) xdm, kdm, gdm - all will only use the RV370 (display :0.0) and the 9250 will stay dark until XFCE launches 2) With my xorg.conf when xfce fires up the cards are both in clone mode and I have a shellscript that calls xrandr (also attached) to spread the desktops across the monitors 3) I have the Virtual statements in the Display subsections of each Screen section that are the combined horizontal resolution for each pair of monitors. 4) I cannot move windows from one card to the other, it's as though each card's pair of monitors are their own independent desktop. Moving windows from one monitor to the other, provided that they are on the same card works. I think that's all the warnings about this setup that I have. I find it usable. I would bet that others will be able to provide updates to this configuration to make it better. For example including Xinerama, which I don't use. Also, KDE4 fails miserably with this configuration. KDE3 and xfce work well enough. James </div></blockquote></div> Hi James, thanks for your suggestions above. The RV670 that I have is a very different beast from your RV370 and Radeon 9250 (that would would be R200 I think). As such, I guess i'll just have to wait out until radeonhd/radeon drivers provide good support for it. 4) I cannot move windows from one card to the other, it's as though each card's pair of monitors are their own independent desktop. Moving windows from one monitor to the other, provided that they are on the same card works. That's because you have two different "screens" and that's the expected behavior in principle (at least what you see as the rule-book says). Xinerama is meant to overcome this limitation, but then you would not have DRI. From what have gathered over a period of time, Xinerama will be phased out in favor of XRandr, and you should be able to have a single desktop spanning all four monitors. I have attached a stipped down version of my own xorg.conf. Notice the following options in the device section: Option "Monitor-DVI-0" "Monitor 0" Option "Monitor-VGA-0" "Monitor 1" which I believe get passed on to randr and I don't have to run xrandr explicitly, as you are doing. The general syntax is Option "Monitor-<output>" "monitor_ID" You can find the output(s) for your card by running: xrandr -q. Hope that helps, Ritesh </div>