As of version 1.0-8178, the NVidia driver for linux finally supports rotation. Since my monitors are 1600x1200 pixels, this allows a screen size of 2400x1600 instead of 3200x1200. After trying it for a few days, I decided that I prefer the wide view for most things, but for intense graphic work the taller view may be better.

Drawbacks:

• You have to edit X files and restart X
• The bezels between screens are thicker and include buttons and lights
• The moust cursor is about double-sized, for no apparent reason.

1. Prerequisite: Dual monitors as my earlier post about dual monitors.
2. Edit /etc/X11/xorg.conf and put these lines in the Section “Device” section:

   # Use LeftOf for landscape orientation
   
   
   Option      “TwinViewOrientation” “LeftOf”
   
   Use Below for portrait orientation
   
   Option      "TwinViewOrientation" "Below"</pre></li>
   
   
   In KDE Control Center > Peripherals > Display, set “Orientation” to Left (90 Degrees).  You can also accomplish this with the nvidia-settings program that is part of the driver install package.
   Restart X
   Physically rotate both monitors to portrait mode.  Watch out for the cables while you do this.
   Get some new wallpaper that fits.