1) Introduction

coolrun is a shell script which uses the setpci utility to enable or disable
the power saving features of the AMD Duron/Athlon/Athlon XP/Sempron line of
processors. It does this by direct hardware access to the chipset using setpci.
Most of the chipsets are supported at the moment but some will probably never
be supported because chipset vendors won't release their specifications. At
the moment none of the ATi or ALi chipsets are supported.

NOTE: if you experience some strange behaviors after enabling the power
saving features on your chipset like system lock-ups, instability, decreased
disk or USB performances, then this is not the script's fault! This is a chipset
issue and cannot be "fixed" by this script. The settings this script uses
work perfect on some systems but on others they lead to strange behaviors,
most notably on systems that use early versions of the VIA KT133/KT266
chipsets. However, if you do notice strange behaviors, then just deactivate
the setting using the '-d' option or in rare cases just reboot your system.
Some BIOSes provide settings that can further improve the stability/responsness
of your system while the powersaving settings are enabled.
More information can be found here: http://www.daniel.nofftz.net/linux/

I'm not responsible for any damages to your system when using this script.
Different motherboard manufacturers use the same chipsets but with different
voltage lines and/or capacitors, thus one system can behave very normal
while others experience random lock-ups or performance issues.
However, I've tested the script on a wide range of chipsets and so far
I'm pretty pleased with its operation, though I'm always looking to improve
it :)

How to test if the settings work?

After enabling the powersaving features on your chipset, you can use a
monitoring program like GKrellM to check out the temperature on your
processor. Also you can check out the CPU fan speed to see if the fan's
rotation slows down which means that the system is decreasing its speed
because the CPU is running cooler and there's no need for the fan to
operate at a high speed.

2) Requirements

setpci from the pciutils package is required :)

3) Installation

login as root and run the 'install' script
