d.mon

[Shyh-yuan Liu]

GrassHopper:
I use grass4.1 in sun4.
I open the monitor(d.mon start=x3) and not doing.
use d.mon start=x3 dispaly message fllowing:
-------------------------------------------------
Graphics driver [x3] started
Error - Could not complete locking process for monitor <x3>.
Lock file is /users/grass4.1/sun4/locks/imtsparc/mon.488045
Problem selecting x3. Will try once more
Error - Could not complete locking process for monitor <x3>.
Lock file is /users/grass4.1/sun4/locks/imtsparc/mon.488045
---------------------------------------------------------------
After I can't close the monitor(d.mon stop=x3) and display the message fllowing:
"Error - Locking mechanism failed".I have to close the monitor use "kill".
Can you tell me how to do.
Thanks in advance.