[mythtv-users] Assorted Questions about improving MythTV experience

[Jeff Monks]

> Lastly, my system keeps enacting some sort of 'screen saver' when in 
> Console AND X after about 5 minutes the screen goes black.
> I have had many great inputs about what to do to fix this.
> I find if I do all three of these things, it works:
> xset off
> xset -dpms
> setterm -blank 0

Look for a line like:

    Option "DPMS"

in your XF86Config (or XF86Config-4) file and comment it out or delete it. 
This will disable the DPMS screen saver at X startup.