"dcop ksmserver default logout"


followed by three parameters, the parameters mean:

First parameter:    confirm
	Obey the user's confirmation setting:	-1
	 Don't confirm, shutdown without asking: 0
	Always confirm, ask even if the user turned it off: 1

Second parameter:    type
	Select previous action or the default if it's the first time: -1
	Only log out: 0
	Log out and reboot the machine: 1
	Log out and halt the machine: 2

Third parameter:    mode
	Select previous mode or the default if it's the first time: -1
	Schedule a shutdown (halt or reboot) for the time all active sessions
have exited: 0
	Shut down, if no sessions are active. Otherwise do nothing: 1
	Force shutdown. Kill any possibly active sessions: 2
	Pop up a dialog asking the user what to do if sessions are still active: 3


Example:
dcop ksmserver default logout 0 -1 -1


I can't test this on trinity but it worked in an old kde3 vm