> 2. PCI devices > PCI bus provides method to control device power. For example, I have > completely no use for my FireWire controller and most of time - EHCI USB > controller. Disabling them allows me to save about 3W of power. To > disable all unneeded PCI devices you should build kernel without their > drivers and add to loader.conf: > hw.pci.do_power_nodriver=3 > To enable devices back all you need to do is just load their drivers as > modules. The new USB stack should turn off USB HC's automatically when not in use. At least the schedules will get disabled. Did you do any research on this? --HPSReceived on Mon May 04 2009 - 05:24:05 UTC
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