Running 12.04 on an HP Pavilion g6 , trying to run dual monitors to a 1600x900 Acer screen.

Get this message pretty much every single time I attempt to change resolutions, whether higher or lower.

Help would be appreciated.

Code:
requested position/size for CRTC 148 is outside the allowed limit: position=(1366, 0), size=(1600, 900), maximum=(2806, 2806)

GDBus.Error:org.gtk.GDBus.UnmappedGError.Quark._gnome_2drr_2derror_2dquark.Code3: requested position/size for CRTC 148 is outside the allowed limit: position=(1366, 0), size=(1600, 900), maximum=(2806, 2806)