power management, ahci link power management and DragonFly

Alexander Polakov polachok at gmail.com
Mon Nov 8 05:06:37 PST 2010

2010/11/8, Alex Hornung <ahornung at gmail.com>:
> Hi,
> I've been playing around today to see the our power efficiency on my
> ThinkPad. I have been using acpiconf -i 0 to see the discharge rate, and
> it seems we can't get below 19W. On linux and Windows I can get as low
> as 10-12W.
> I've set the brightness to the lowest level. I didn't enable any wifi
> power management, but on linux I can't do that either since it has been
> marked as broken for my card on linux (iwl3945).

How about PCI? It can offer some powersaving with hw.pci.do_power_nodriver
set to 3 I think.

Alexander Polakov | plhk.ru

More information about the Kernel mailing list