Re: Wrong clock initialization

[george anzinger <george@mvista.com>]

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