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tool to enable powersaving mode for Athlon/Duron processors


athcool is a small utility for enabling/disabling Powersaving mode for AMD Athlon/Duron processors.

By enabling Powersaving mode you can lower power consumption and CPU temperature when the CPU is idle.

Powersaving works only if your kernel supports ACPI (APM does not work), because athcool does only (un)set the "Disconnect enable when STPGNT detected" bits in the Chipset's Northbridge. To really save power, the STPGNT signal has to be sent when the CPU is idling. This is done by the ACPI subsystem when C2 state entered.

!!!WARNING!!! Depending on your motherboard and/or hardware components, enabling Athlon powersaving mode sometimes causes:

 * noisy or distorted sound playback,
 * a slowdown in harddisk performance,
 * system locks or instability,
 * massive corruption of the filesystem (observed at least once).

If you met those problems, you should not use athcool. Please use athcool AT YOUR OWN RISK.

If athcool works fine for you, and you want it to run automatically on startup, please read the /usr/share/doc/athcool/README.Debian file.

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