Re: Wrong clock initialization

From: David Balazic (david.balazic@uni-mb.si)
Date: Tue May 20 2003 - 13:27:55 EST


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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This archive was generated by hypermail 2b29 : Fri May 23 2003 - 22:00:41 EST