Messages in this thread | | | Date | Tue, 20 May 2003 13:21:55 -0700 | From | george anzinger <> | Subject | Re: Wrong clock initialization |
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David Balazic wrote: > 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.
Ouch! That is a real disconnect. Time to fix something. > > >>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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