Kai Weber schrieb: > * Sheer El-Showk <[EMAIL PROTECTED]>: >> same would hold for the GPU. Otherwise I really have no idea what >> could be burning so much power in linux. > > Maybe the processors power management features are not supported under > Linux: > http://www.intel.com/technology/itj/2006/volume10issue02/art03_Power_and_Thermal_Management/p02_intro.htm
This is difficult to say, because the BIOS plays a role in it... This gives a short overview: http://www.linux-pm.org/docs/pm-summit-0406-acpi.pdf The interesting part is these: C-states in Linux * OS visible C-states != hardware C-states – BIOS decides what to expose to the OS * _CST support – “processor.nocst” can disable it * SMP deep C-state support – “processor.max_csate=n” can reduce it I do not know of any way to tell, which deeper sleep state are used... Maybe another problem will be, that Linux does not switch directly into some of the deeper C states. I found a patch, which will change the usage of the C states, but it's not the newest (and I did not found any newer version of it) and I had no time to test it. Here it is: http://www.thisishull.net/archive/index.php/t-203606.html Regards Sven -- Sven Anders <[EMAIL PROTECTED]> () Ascii Ribbon Campaign /\ Support plain text e-mail ANDURAS service solutions AG Innstraße 71 - 94036 Passau - Germany Web: www.anduras.de - Tel: +49 (0)851-4 90 50-0 - Fax: +49 (0)851-4 90 50-55 Rechtsform: Aktiengesellschaft - Sitz: Passau - Amtsgericht Passau HRB 6032 Mitglieder des Vorstands: Sven Anders, Marcus Junker Vorsitzender des Aufsichtsrats: Dipl. Kfm. Thomas Träger
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