I can confirm this too. The shortcut only works once. I have to reboot or relog to make it work again. And then, too, it only works once before it breaks up again.
Seems to be the same issue than : http://askubuntu.com/questions/364424/superd-key-shortcut-does-not-show-desktop-in-ubuntu-13-10 http://askubuntu.com/questions/369641/hide-all-normal-windows-shortcut-is-not-working-in-ubuntu-13-10 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1234665 Title: hide all normal windows custom key binding is ignored To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1234665/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs