knorke uses dualscreen spring, it is supereffective.
knorke uses dualscreen in fullscreen, spring goes derp.
In springsettings.exe I check the [x]dual-screen option.
Then in windowed mode I resize spring to cover both screens and it works. (minimap on left screen, rest on right screen)
http://h11.abload.de/img/screen00001uwksc.png
(4mb, large image)
But in fullscreen, everything gets messed up:

The right side of the screen is empty (just map background color, not visible in screenshot) and the other half shows both screen at once. (distorted of course) And the screenshot has this funny dimensions. (tried various resolutions in springsettings, including 0x0 which is autodetect(?))
Before I try out all kind of wild things:
Did anyone ever test spring dualscreen and fullscreen?
infolog of fullscreen start:
http://pastebin.com/VC2cY2jN
computer:
Windows Vista 32bit (lol)
Radeon X1300/X1550 Series (not sure why it shows like this, it is just one card?)
two 1280x1024 TFT screens (connected with y-cable)
Beside this problems there are some other minor quirks, but all in all it seems to work good. Windowed mode is good enough for me, I am just wondering.
So thanks that spring has this cool feature!