My 15" laptop panel has a resolution of 1920x1080, which is fine for most things. However, some games tax my hardware too much at this resolution, so I'd like to lower it in some instances. Problem is, the Kubuntu System Settings Display module won't let me choose anything lower than Full HD resolution (1080p). nvidia-settings will let me choose "1366x768 (scaled)", and displays the desktop at 1366x768, but will let me *pan* past that resolution to other desktops. Games still see this "fake" 1366x768 resolution as 1920x1080. Anyone have a solution or workaround?

Hardware specs:

Asus G53SX-XN1
Nvidia GTX 560M 2GB VRAM
i7-2630QM @ 2 Ghz
8GB DDR3 1333MHz
Seagate 1TB SSHD (dual boot w/Win7 Pro)

NVidia driver version 331.13 (from the Ubuntu repository)