Put this in a file called standby.sh. By 'standby' I am refering to screen blanking. You can find radeontool in the AUR packages. 

#! /bin/sh

# Scripted 18 September 2006 by Michael Schmitz
# Toggles the state of the LCD backlight.

radeontool light | grep off

# If the previous command succeeded
if [ $? -eq 0 ]; then
  echo Shutting off the LCD backlight.
  radeontool light on
else
  echo Turning on the LCD backlight.
  radeontool light off
fi

LinuxThinkpadScriptStandby (last edited 2006-10-27 19:39:00 by michael)