Comment 23 for bug 577640

From http://www.ubuntugeek.com/dual-monitors-with-nvidia.html someone left this suggestion:

Hi guys, I figured this out with natty 11.04, and wanted to post what i did. From the arch linux wiki, i used
nvidia-xconfig --twinview
to enable twinview, then
nvidia-settings --load-config-only
to make sure the settings pages loaded. Then in unity i went into the nvidia settings program and tweaked. Much easier then editing the x11 file manually.