Power management notes

Powertop

a good tool to let you see what's going on.

setterm

setterm -powersave powerdown
setterm -powerdown 1

Resource

• http://www.smop.co.uk/mediawiki/index.php/Power_saving_on_Linux
• http://www.linuxpowertop.org/faq.php

Xorg

Turn on dpms for your monitor

set it hot (doesn't survive a restart):

xset dpms 0 120 240

in xorg.conf

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "IBM"
    HorizSync       53.4 - 64.1
    VertRefresh     50.0 - 60.0
    Option         "DPMS" <------- add this line
EndSection

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option          "BlankTime"     "1" <---- added these 4 options
    Option          "StandbyTime"   "0" <--
    Option          "SuspendTime"   "0" <--
    Option          "OffTime"       "3" <--
EndSection