On 21 mei 2009, at 21:30, Jesse Sheidlower wrote: <snip>
When I use the auto-generated xorg.conf and run grandr, I'm able to do some things, such as flip the image on the second monitor, but in the "Layout" tab, the "Clone" or "Extend" options are grayed out, and I can't drag the icons around. And when I run xrandr on the commandline, it tells me "Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 1400 x 1400", so if the maximum really is 1400 x 1400, it seems like dual-head would never be possible. I'm at a loss about what to try next, or what details of my system would be helpful to provide. Any suggestions?
To use grandr for dual head setup, you need to make some changes to xorg.conf. You need to add a maximum virual screen size that should at least be the total of both your screens combined. So if you had one screen with max res of 1280x800 and another with 1280x1024 then you virtual screen should at least be (if you card supports it): 2560x2560. This way it accomodades both screen is any combination. If I recall correctly you add this to your 'screen' section in the subsection 'display'. Something like this (I could be wrong, I'm not at my Debian box right now):
Section "Screen" <some stuff here> SubSection Display <some stuff here> Virtual 2048 2048 <- new entry End SubSection End Section HTH Peter