SuperLinux Encyclopedia - Computer Power Control

Misc:

• Battery Powered mini-HOWTO (How to reduce a Linux system's power consumption.)
• UPSes (Uninterruptable Power Supplies)

APM - Advanced Power Management:

• Linux and Advanced Power Management
• apmd: An APM daemon. Find at an archive site.
• an APM FTP site
• WMAPM "WindowMaker-dockable APM/Battery Monitor"

DPMS - Display Power Managment System (?):

• DPMS is a VESA-sponsored standard. Find more info on their website. Note that it covers more than just "displays".
• Three power saving modes (name, power reduction, approx. recovery time):
  Doze, >80%, nil
  Standby, >92%, < 2 sec (to <30W)
  Suspend, >99%, < 10 sec (to <4 W; may shut down disk & cpu)
  The "xset" man page refers to "standby, suspend, & off". I don't know how these compare.

FOUND ON USENET:

>For ATX systems, it would be nice if "init 0" could flag the kernel to
>shut off power when the system is finally halted (or perhaps some
>other option to do so).  Windows 95 does this with laptops,
>Linux should too.

And it does, too.  You need to enable the powere management driver and
rebuild a new kernel.  With that, and the right type of hardware you
do init 0 and the power will be turned off after the system is shut down.

Havent seen any laptop where this didn't work, and I've also used that
on HP brio and it works there, too.

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