Re: Fighting for the power.
"Paul B. Mahol" <[email protected]>
| Newsgroups | gmane.os.freebsd.current,gmane.os.freebsd.devel.acpi,gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
On 5/4/09, Alexander Motin <[email protected]> wrote: > 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. Unloading modules doesnt put them back into into D3 state. You are forced to load some another module again to put wanted device into D3 state. -- Paul _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"