@Tpugliese - it's not in System Settings, it's in dconf. You have to:
1. Ensure you have unity-greeter 0.2.8-0ubuntu1 installed
2. Creating a file called: /usr/share/glib-2.0/schemas/50_unity-greeter.gschema.override
3. Place in this file:
[com.canonical.unity-greeter] play-ready-sound = false
4. Run this command:
$ sudo glib-compile-schemas /usr/share/glib-2.0/schemas/
Log out and no sound should be played.
@Tpugliese - it's not in System Settings, it's in dconf. You have to:
1. Ensure you have unity-greeter 0.2.8-0ubuntu1 installed
2. Creating a file called: /usr/share/ glib-2. 0/schemas/ 50_unity- greeter. gschema. override
3. Place in this file:
[com.canonical. unity-greeter]
play-ready-sound = false
4. Run this command:
$ sudo glib-compile- schemas /usr/share/ glib-2. 0/schemas/
Log out and no sound should be played.