Date: Tue, 20 May 2003 20:27:55 +0200
From: David Balazic <david.balazic@uni-mb.si>
Subject: Re: Wrong clock initialization
To: george anzinger <george@mvista.com>
Cc: linux-kernel@vger.kernel.org
Message-id: <3ECA73AB.FBC470DB@uni-mb.si>
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george anzinger wrote:
> 
> David Balazic wrote:
> > Hi!
> >
> > When the kernel is booted ( ia32 version at least ) , it reads
> > the time from from the hardware CMOS clock , _assumes_ it is in
> > UTC and set the system time to it.
> >
> > As almost nobody runs their clock in UTC, this means that the system
> > is running on wrong time until some userspace tool corrects it.
> >
> > This can lead to situtation when time goes backwards :
> >
> > timezone is 2hours east of UTC.
> > UTC time : 20:00
> > local time : 22:00
> >
> > System time between boot and userspace fix : 22:00UTC
> > System time after fix : 20:00UTC
> >
> > Comments ?
> 
> During shut down my system "says" it is setting the CMOS clock from
> the kernel clock.  I would expect this to correct the problem.  Is
> this a distro thing?

The time is properly converted first to be localtime, if your CMOS
is localtime. So this does not fix anything.

> 
> In any case, this would seem to make the problem go away after the
> first shutdown (if you don't dual boot with something other than Linux :).


-- 
David Balazic
--------------
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