Re: [Mactel-linux-devel] C4 state - Status report

[Davide B. <da...@da...>]

Ok, I trust him.
I was wrong

On 4/25/07, Thomas Meyer <th...@m3...> wrote:
>
> Davide Bertola schrieb:
> > On 4/24/07, Sven Anders <an...@an...> wrote:
> >
> >> Sheer El-Showk schrieb:
> >>
> >>
> >>>> On my system osx idles at ~1200 mA, linux does 16 W -> 1600 mA.
> >>>>
> >> My MacBook Pro idles at 32W almost constantly.
> >>
> >
> > 32W means you get almost 1,5 hours. That's ridicolus.
> > Maybe your scaling governor is not working, or battery is not
> calibrated..
> > Then you have a macbook pro so you may have that problem with ati
> drivers.
> >
> >
> >>>> It's also hotter when using linux. Why ?
> >>>> I guess:
> >>>> - Lack of C4 state support.
> >>>>
> >> I think Linux is using C4(E) state too, but it does not stay as long
> >> as MacOSX in it.
> >>
> >>
> > You think, but it's not true. linux sees onlin C1 C2 and C3 state. On
> > some macbooks pro only C1 and C2. You can verify that looking
> > somewhere in /proc or /sys I don't remember now.
> >
> >
>
> Better trust him. Linux does use C4 state. See also
>
> http://www.mail-archive.com/mac...@li.../msg00918.html
>