Re: RE: K7 CPU disconnect & system lock

["Thomas Herrmann" <ollo.diab-Mmb7MZpHnFY@public.gmane.org>]

> Hi!
> 
> > the K7 cpu disconnect feature is a power save mode, where the CPU
> > disconnects from the north bridge and goes into sleep mode. Any
> interrupt will wake-up
> > the CPU which then needs to connect to the north bridge again to
> transfer
> > data. While CPU disconnect enabled the idle temperature of the CPU drops
> from
> > around 52C to 27C on my systems. On certain systems this feature can be
> enabled
> > via BIOS, but there is also a tool called "athcool" which sets the
> > configuration register.
> > 
> > I have attached the requested logs. As you will see while acpi=off
> certain
> > devices (like USB) are not available due to no IRQ routing. All devices
> work
> > fine with acpi enabled.
> 
> I believe that was traced to hw problem, see kernel list for nforce2
> info.

Hi Pavel,

that's not totaly true. I've checked the LKML and there are reports of
working systems. It seems to depend on BIOS version. It was working fine on my
systems with different BIOS versions and ACPI turned off before. Also I see the
exact same behavior on a NForce2 system as well as on a SiS740 system. So
hardware alone is not the only root cause, IMHO. 

Regards,   Thomas


> 
> 								Pavel
> -- 
> When do you have a heart between your knees?
> [Johanka's followup: and *two* hearts?]
> 

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