phenomenon:
The server cannot be connected by the graphical terminal, and the terminal always blues.
With Telnet, find the following error in $ home / .dt / startlog: I / O Error On Display
Solution:
#Stopsrc -s dtsrc
#Startsrc -s DTSRC
PS-EF | GREP DTLOGIN KILL-9 The - Daemon and The All the Processes That Are Running for Dtlogins CD / VAR / DT AND REMOVE XERRORS AND XPID FILES THEN RESTART THE RC.DT from etc ... and Check That The Demons Are There ...