
The Lock button locks your screen and activates your screensaver. To access your session again, you must enter your password. To lock your screen correctly, you must have a screensaver enabled.
To add a Lock button to a panel, right-click on any vacant space on the panel. Choose Add to Panel -> Actions -> Lock.
Right-click on the Lock button to open a menu of screensaver-related commands. Table 4–1 describes the commands that are available from the menu.
Table 4–1 Lock Screen Menu Items| Menu Item | Function | 
|---|---|
| Activate Screensaver | Activates the screensaver immediately, but does not lock the screen. | 
| Lock Screen | Locks the screen immediately. This command performs the same function as when you click on the Lock button. | 
| Kill Screensaver Daemon | Terminates the screensaver process. After you terminate the screensaver process, you cannot lock your screen. | 
| Restart Screensaver Daemon | Terminates and restarts the screensaver process. Use this command after you change your password. When you restart the screensaver process, use your new password with the screensaver. | 
| Properties | Displays the XScreenSaver preference tool. |