Technical:Screen Blanking

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This is all for XFree86-4 drivers. ScreenBlankingWithXFree86-3 drivers must be done differently.

I know people have asked in the past about blanking the screen on a Jammin 125. Jim ~McQuillan happened to bump into Keith Packard (xfree86 guru) and Keith suggested turning on DPMS -- how simple. Well low and behold it worked==== ====

Here is a quick review of what I did.

Open /opt/ltsp/i386/etc/rc.setupx in your favorite editor.

Search for the following section of code: <verbatim> Section "Monitor"

       Identifier      "My Monitor"
       VendorName      "Unknown"
       ModelName       "Unknown"
       HorizSync       ${X_HORZSYNC}
       VertRefresh     ${X_VERTREFRESH}

EOF </verbatim> Add the following line between "~VertRefresh" and "EOF"

       Option          "DPMS"

When you are finished it should look like this: <verbatim> Section "Monitor"

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

EOF </verbatim> Save your changes.

Power cycle the workstation and wait 10 minutes. After 10 minutes of inactivity your monitor should go into power save mode. There is a more information about DPMS settings at this site:

http://barriebremner.com/xfreedpms.html

Changing rc.setupx in this manner will turn on DPMS for all your LTSP clients. I'm sure Jim will release an updated ltsp_core with an option to turn on dpms vi lts.conf, but I thought I would share this quick hack with everyone -- it made my day==== ====