Matrox Triplehead2Go and linux
I am the happy owner of a Matrox TripleHead2Go and three 19" TFT screens. Needless to say this makes for some pretty cool gaming moments (see the Dead Space gallery for some, much too small, screenshots to get an idea of the view you get).
Installation under Windows was fairly easy with the included software. Getting the thing to work under Linux was ... also fairly easy.
All that was required was a small edit of xorg.conf :setting the Modes parameter under the Screen section (subsection Display) to "3840x1024" was enough.
The one other thing I did in order to be able to maximize windows to just one screen instead of having them span all three, was add the following line to the Device section :
Option "TwinViewXineramaInfoOverride" "1280x1024+1280+0, 1280x1024+0+0, 1280x1024+2560+0"
Notice that I start with the middle screen (+1280+0), then put the left one (+0+0), and then the right one (+2560+0). This is to ensure that the middle screen is used as the "main" screen (e.g. to decide where to display GDM).
More screenshots and possibly some pictures will follow, eventually. For now, here's my xorg.conf.