[ltp] When/where/what for low power consumption?

Ulrich Kuehn linux-thinkpad@linux-thinkpad.org
Wed, 16 Nov 2005 15:48:09 +0100

On Wed, 2005-11-16 at 15:38 +0100, Felix E. Klee wrote:
>  From people using a modern Thinkpad (T4x, R4x, R5x, etc.) I'd like to know:
>    What commands do you use to put your system into low power consumption
>    mode, and when/where do you issue these commands (on system startup,
>    on ACPI events, etc.)?
> My system is a T41 2373-3kg (Centrino chipset, Radeon 9000, Bluetooth).

Have here a T41 2373-2GG (Radeon 7500). I use 

* the cpuspeed daemon for frequence scaling (has ability to look at CPU
temperature and slow down the CPU if a threshold is reached)


* Suspend2 for suspend to disk. Works great since about 1 year now for
me. Currently I am using 2.6.14 with suspend 2 2.2rc8

* A radeon patch for turning the GPU into D2 state when suspend to ram.
That way it consumes only about 600 mW.

And typicall I have off the wireless parts (IPW2100, Bluetooth),
although that depends on the environment.

Hope this helps