I am using nvidia-settings to configure multiple monitors . The monitors' native resolutions are different, so this generates 'gaps' where the items are drawn on the virtual screen but not on any of the physical ones.
How can I configure the display settings to not have any content drawn on the regions which are not directly mapped to a physical screen?
This should happen automatically if your window manager supports the Xinerama extensions (yes, even if you're using nVidia TwinView without Xinerama.) I use Awesome as my window manager and it handles this perfectly - no windows are ever shown in the off-screen areas.
Alternatively you could switch to separate X screens instead of using TwinView/Xinerama. This method removes any off-screen area, at the expense of being unable to move windows between screens.
