Re: 2.6.18-rc4 (and earlier): CMOS clock corruption during suspend to disk on i386

Andrew Morton
2006-08-09T20:12:50Z

On Wed, 9 Aug 2006 22:01:42 +0200
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> On Wednesday 09 August 2006 14:30, Pavel Machek wrote:
> > Hi!
> > >
> > > It looks like the CMOS clock gets corrupted during the suspend to disk
> > > on i386. I've observed this on 2 different boxes. Moreover, one of them is
> > > AMD64-based and the x86_64 kernel doesn't have this problem on it.
> > >
> > > Also, I've done some tests that indicate the corruption doesn't occur before
> > > saving the suspend image. It rather happens when the box is powered off
> > > or rebooted (tested both cases).
> > >
> > > Unfortunately, I have no more time to debug it further right now.
> >
> > Do you have Linus' "please corrupt my cmos for debuggin" hack enabled?
>
> Well, I know nothing about that. ;-)
>

CONFIG_PM_TRACE=y will scrog your CMOS clock each time you suspend.