Is there a solid way of using either X directly or KDM/GDM/KDE/Gnome to quickly switch between an external screen and modify the screen layout accordingly? I'm stealing the inspiration from Windows 7's +P functionality, where a central popup shows 4 different possible layouts: only external, duplicate, only internal screen, extend desktop.I can switch between any (or at least most) of these by using the Nvidia control panel (and if I was using the open source drivers, through the KDE X screen configuration option screen, and something similar for Gnome). I would like a faster way to just switch output, without having to go through billions of menus (ok, slightly exaggerated, but still... you get the point)
Fast switching between external and internal screen
gnome;xorg;kde;display settings