In /src/Pages/Layout/settings.vala in luna branch key layout is saved at org.gnome.libgnomekbd.keyboard
In /src/Pages/Layout/settings.vala in trunk(freya) branch key layout is saved at org.gnome.desktop.input-sources
Currently the ctrl+space layout that works for me is saved in org.gnome.libgnomekbd.keyboard.
So the layout is read from org.gnome.libgnomekbd.keyboard but from the switchboard is saved at org.gnome.desktop.input-sources
Did a little research
In /src/Pages/ Layout/ settings. vala in luna branch key layout is saved at org.gnome. libgnomekbd. keyboard Layout/ settings. vala in trunk(freya) branch key layout is saved at org.gnome. desktop. input-sources
In /src/Pages/
Currently the ctrl+space layout that works for me is saved in org.gnome. libgnomekbd. keyboard. libgnomekbd. keyboard but from the switchboard is saved at org.gnome. desktop. input-sources
So the layout is read from org.gnome.