In order for this to work, dtsession must be setuid root. If dtsession is not setuid root, then locking will be disabled, and a message will be written to ~/.dt/errorlog with the message: "Unable to lock display due to security restrictions".
In order for this to work, dtsession must be setuid root. If dtsession is not setuid root, then locking will be disabled, and a message will be written to ~/.dt/errorlog with the message: "Unable to lock display due to security restrictions".