Re: Is the C3 possible with SMP?

On Mon, 2008-11-03 at 22:56 +0200, Alexander Motin wrote:
> Alexandre "Sunny" Kovalenko wrote:
> >>> When laptop is moving around with me, all USB modules are unloaded and I
> >> I will try to unload USB later today.
> 
> I have got a bit power on disabling EHCI, but it could happen just 
> because device itself went into the D3 state. C3 stats doesn't changes 
> on that. UHCI and other devices disabling also gave some bits.
> 
> >>> get about 4 hours of battery life with wireless on, admittedly on the
> >>> light usage (reading/writing E-mails, browsing web, typing up occasional
> >>> document). I consider this good for 4.4lbs (<2kg) laptop.
> >> I have a bit more then 3 hours at the same weight. Which CPU, video and
> >> chipset do you have?
> > This is CoreDuo T2400 with Intel 945GM video and Atheros 5212 a/b/g
> > wireless part. One other thing, I forgot to mention is: I set 
> > 
> > hw.pci.do_power_nodriver: 3
> 
> Thanks. With disabling everything possible I was able to reach 4 hours 
> plank!
> 
> There is one question appeared, is there any way to deny driver 
> attachment for some specific device to left it is D3 state? For example 
> I don't need some specific USB hosts and PATA controller, but I can't 
> disable them with just not loading the driver. There is alike DF_ENABLED 
> flag I have found, but I haven't found any external way to reset it. :(
Well, this is way beyond my knowledge. Hopefully, someone who actually
knows how things work will chime in.

Sorry.

-- 
Alexandre "Sunny" Kovalenko (Олександр Коваленко)

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