Large panning desktop

[Harry Putnam]

Jared Greenwald <greenwaldjared at gmail.com> writes:

> I have an on-board Radeon 4250 that powers my 2x24" monitors
> (VGA/HDMI).  I didn't have to do anything special under Gnome/Unity,
> just go into the Monitors section under the System Settings and turn
> off mirroring.

I'm not sure you are talking about what I'm asking about.  Is your
desktop actually bigger than the monitor real estate so that to get to
all of it you need to pan with the mouse?