Code review comment for lp://staging/~lightdm-gtk-greeter-team/lightdm-gtk-greeter/greeter-background

Ok, found the xrandr script for lightdm now.

As I said, this is far too complicated for the average user, I guess we should handle it ourselves by copy-pasting some code from e.g. xfce's display dialog/settings daemon.

(I guess that's the edge Ubuntu has over us with having gnome/unity-settings-daemon running in the greeter session already...)