S3 experience on Thinkpad 570E

[Andrea Campi]

On Tue, Dec 28, 2004 at 10:27:57AM -0500, John Baldwin wrote:
> > > In a nutshell, acpiconf -s3 powers down; on powerup however the machine
> > > is deadly slow. I replicated this with a stripped down kernel; the only
> > > thing that was evidently wrong is that the clock slowed down from 1000 to
> > > around 250 interrupts per second.
> >
> > It sounds like the clock interrupt source is not getting saved/restored
> > properly if it slows after a resume.  I am not sure how to solve this.
> > Perhaps John has something to add.
> 
> Currently on i386 the clocks are not real new-bus devices and I'm not sure if 
> they have proper resume support.  I think we do have some sort of hardcoded 
> call to the clock code on i386 to resume the clocks but I'm not sure.

OK, thanks. Just for completeness, I'll check and report what
happens with a different value of HZ (100, for instance ;-)), just in
case this makes any difference--as I would expect if this is a case
of resuming to some hardcoded value.

Bye,
	Andrea

-- 
            The dark ages were caused by the Y1K problem.