1bb0e18042
This commit makes it possible to configure logical monitor scale also when running on top of an X11 server using Xrandr. An extra property 'requires-globla-scale' is added to the D-Bus API is added to instruct a configuration application to only allow setting a global logical monitor scale. This is needed to let gsd-xsettings use the configured state to set a XSettings state that respects the explicit monitor configuration. https://bugzilla.gnome.org/show_bug.cgi?id=777732