Difference between revisions of "How to reduce power consumption"

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(External resources: Pavel's "8hours of battery life on your lap(top)")
(USB, sound)
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* Activate power saving on the wireless network card
 
* Activate power saving on the wireless network card
 
** For [[Intel PRO/Wireless 2200BG Mini-PCI Adapter]] and [[Intel PRO/Wireless 2915ABG Mini-PCI Adapter]], see instructions for the [[ipw2200]] driver.
 
** For [[Intel PRO/Wireless 2200BG Mini-PCI Adapter]] and [[Intel PRO/Wireless 2915ABG Mini-PCI Adapter]], see instructions for the [[ipw2200]] driver.
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===USB===
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Causes significant power draw due to bus mastering. Disable by unloading modules.
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===Sound===
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Consumes about 0.3W. Disable by unloading modules or {{cmdroot|echo -n 3 >  /sys/class/sound/controlC0/device/power/state}} (replace 3 by 0 to enable again).
  
 
==Related toptics==
 
==Related toptics==

Revision as of 02:07, 24 September 2006

Reducing system power consumption will extend battery life, reduce system temperature and (on some models) reduce system fan noise. This page summarizes the known techniques for reducing power consumption on ThinkPad laptops under Linux. The power numbers given (in Watt) are very rough and model-specific.

System power states

CPU

Graphics

Hard disk

Spinning down the disk saves about 1W.

Optical drive

The optical drive consumes about 1W even when not accessed.

System fan

Consumes about 0.5W when running.

Wireless network

Consumes up to ~4W.

USB

Causes significant power draw due to bus mastering. Disable by unloading modules.

Sound

Consumes about 0.3W. Disable by unloading modules or # echo -n 3 > /sys/class/sound/controlC0/device/power/state (replace 3 by 0 to enable again).

Related toptics

External resources