Re: Fighting for the power.
Alexander Motin <[email protected]>
| Newsgroups | gmane.os.freebsd.current,gmane.os.freebsd.devel.acpi,gmane.os.freebsd.devel.mobile |
|---|---|
| Message-ID | <[email protected]> |
Paul B. Mahol wrote: > 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. Yes. Resume also does not powers down unowned devices. Would be good to fix that also. -- Alexander Motin _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"