Re: problem with cpu eating too much power, prize given if solved

Keld Jørn Simonsen
2004-06-29T15:57:18Z

On Mon, Jun 28, 2004 at 10:40:09PM +0200, Pavel Machek wrote:
> Hi!
>
> > Many times I just want to read the screen, eg emails or documents,
> > and then still the cpu will be in idle mode, where
> > it uses 7.5 W out of the about 15 W that the whole machine uses.
> > I have found out from Intel data sheets that my
> > Mobile Intel Celeron 2.0 GHz CPU consumes 7.5 W in idle loop/
> > stop grant/sleep states, (and 5.0 W i deep sleep state).
> >
> > So I would like to have the CPU stopped completely (consuming 0 W)
> > while I still could read the screen. In that way I should
> > be able to have about double the lifetime on the battery,
> > going to about 7 hours from the 3.5 hours I have now.
> >
> > I would like the machine to wake up again by any keystroke
> > on the keyboard or mouse input. I would like the input to be
> > reacted upon (not just used to wake up the system, and
> > then forgotten).
> >
>
> S1 is what you want... but... if you get what you asked for,
> do you realize that for example clock would not update on the desktop
> in this mode?

Maybe S1 is what could do this. I understand that I could not then have
the clock updated every second but every minute would work, and even if
the screen was not updated every minute it would be fine. But I would
expect the clock to be accurate when the cpu is started again.

Best regards
Keld