Yes, it wouldn't work in dconf-editor because the setting is for the lightdm user, not for your user (or root). The easiest method to disable the login sound is probably the following:
Create a file named: /usr/share/glib-2.0/schemas/unity-greeter.gschema.override with the following contents: [com.canonical.unity-greeter] play-ready-sound=false And then run: sudo glib-compile-schemas /usr/share/glib-2.0/schemas/ I am going to mark this bug as invalid, if you feel there really is a bug here, please feel free to reopen it. ** Changed in: unity-greeter (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1001947 Title: play-ready-sound doesn't work in dconf-editor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1001947/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs