Comment # 3 on bug 91333 from Corey Ashford

(In reply to Ilia Mirkin from comment #2)
> While "going crazy" is rarely the right thing to do, I'd like to point out
> that a GF108 only has 2 CRTC's and thus can only ever power 2 different
> screens at a time. (There might be a way to drive 2 identical screens at
> once from a single CRTC, not sure.)

Yeah, I realize that.  Just as a reference point, two external monitors works
fine with Windows 7, even with just the Nvidia chip enabled (discrete
graphics).  With Optimus enabled, I can actually drive all three monitors
simultaneously.

> 
> I suspect a negative interactions with gnome which might get confused about
> such a restriction.

Maybe so.

Thanks for your input :)