Install using the server .iso (choosing no roles, so it is really a base install)
Add staging ppa: sudo apt-add-repository ppa:unity-team/staging
Log into unity session and see that the hide desktop keys are Ctrl-Alt-d (ccsm shows Ctrl-Alt-d as well)
(logging into Guest session the keys are Ctrl-Super-d)
To reproduce:
Install using the server .iso (choosing no roles, so it is really a base install) team/staging
Add staging ppa: sudo apt-add-repository ppa:unity-
Log into unity session and see that the hide desktop keys are Ctrl-Alt-d (ccsm shows Ctrl-Alt-d as well)
(logging into Guest session the keys are Ctrl-Super-d)