Clock Problem on AMD64 - Fedora Core 4

[Peter Jones]

On Thu, 2005-03-31 at 21:37 -0500, Marc M wrote:
> > if you are using NTP you should use a local NTP server (same time zone)
> > I have had the same prob on my FC3 Notebook and I only could fix it with
> > changing the NTP server I used.
> > some how the NTP request is overwirting all the other settings.
> 
> 
> --Ok, will do, thanks.  And yes I am EST. 
> 
> ---In answer to Bret's question, yes, when I run timeconfig, the
> 'system clock uses UTC' is indeed checked.
> 
> --Oh, and this is a dual boot with windblows that I haven't bothered
> removing,  if windblows is the problem I will eradicate that.  How do
> I know for sure that windblows is the problem here?

It is -- well, sortof.  If you boot into windows, it reads the hardware
clock, which it doesn't know is UTC.  So it thinks that's the local
time.  If the time is corrected (i.e. with something like ntp, or by
manual update, or whatever), then it'll write the local time to the hw
clock.

So then, when you reboot to Linux, it reads the local time from the hw
clock, but it thinks it's reading UTC.  So it's off by your timezone
offset.

The solution is to either not use UTC, not dual boot, or to make sure
Windows never updates the time.  Ever.  At all.

-- 
        Peter