Re: Instability without ACPI

Ducrot Bruno
2003-07-11T18:46:48Z

On Fri, Jul 11, 2003 at 07:17:25PM +0100, Sérgio Monteiro Basto wrote:
> On Fri, 2003-07-11 at 18:26, Ducrot Bruno wrote:
> >
> > You probably need acpi due to power states for the cpu. Common problem
> > with laptop shipped with athlon in general (there is a tool called
> > lvcool though if you do not have acpi).
>
> sounds cool
> I have one athlon 4 on one KT133.
> but after reading
> http://cip.uni-trier.de/nofftz/linux/Athlon-Powersaving-HOWTO.html
>
> in 2.5
> This is the only solution which does not use the ACPI system of the
> Linux kernel.

This one will do exactly what ACPI does (that is, in the main loop,
read LVL2 register). So the exact same issue will likely happens.

...

> 2.1. The Command-line Hack
> you can enable/disable the power-saving right from the command-line
> without any need for rebooting.
>
> on KT133/133A, KX133, KL/KLE133, KM/KN133, ...:
> enable: setpci -v -H1 -s 0:0.0 52=$(printf %x $((0x$(setpci -H1 -s 0:0.0
> 52) | 0x80)))
> disable: setpci -v -H1 -s 0:0.0 52=$(printf %x $((0x$(setpci -H1 -s
> 0:0.0 52) & 0x7f)))
>
> How I know if it enable or disable ?

setpci -H1 -s 0:0.0 52
then look if bit 8 is set (enable) or not (disable).

> is it safe try this commands?

I don't know.

--
Ducrot Bruno

-- Which is worse: ignorance or apathy?
-- Don't know. Don't care.