[K12OSN] Can't sleep monitors using DPMS

[Robert Arkiletian]

with 3.1.2 RH9 I simply added the line 
Option   "DPMS" in the following section of file 
/opt/ltsp/i386/etc/rc.setupx

Section "Monitor"
        Identifier      "My Monitor"
        VendorName      "Unknown"
        ModelName       "Unknown"
        HorizSync       ${X_HORZSYNC}
        VertRefresh     ${X_VERTREFRESH}
        Option          "DPMS"
EOF

Now in /opt/ltsp/i386/etc/build_x4_cfg using 4.2.1 I tried using 
Option    "DPMS"  "TRUE" 
and commented out this IF block

#if [ x${X_DPMS} = "xN" -o x${X_DPMS} = "xn"  ]; then
#   echo "        Option          \"DPMS\" \"FALSE\""
#else
#   echo "        Option          \"DPMS\" \"TRUE\""
#fi

 so it will always be DPMS true but it does not work.
Has anyone got monitor power saving mode working in 4.x

-- 
Robert Arkiletian
C++ GUI tutorial http://fltk.org/links.php?V19