Re: Wrong clock initialization

george anzinger (george@mvista.com)
Tue, 20 May 2003 11:10:11 -0700


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?

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 :).

>
>

-- 
George Anzinger   george@mvista.com
High-res-timers:  http://sourceforge.net/projects/high-res-timers/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml

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