You may also want to see DotFiles/X11, which contains a lot of my X11 server configuration tidbits.
Recreate basic xorg.conf on Debian-based systems
1 sudo dpkg-reconfigure xserver-xorg -pcritical
Force monitors into DPMS sleep mode
When you know you'll be going away for a while, you can immediately force your displays to go into sleep mode, conserving power.
1 xset dpms force off