[ntp:questions] System time changes only on restarting ntpd service and query about iterating through the sources

unruh unruh at invalid.ca
Sun Sep 9 15:08:41 UTC 2012

On 2012-09-08, Richard B. Gilbert <rgilbert88 at comcast.net> wrote:
> On 9/7/2012 11:51 AM, unruh wrote:
>> On 2012-09-05, Richard B. Gilbert <rgilbert88 at comcast.net> wrote:
>>> On 9/5/2012 7:29 AM, unruh wrote:
>>>> On 2012-09-04, Arpith Nayak <arpithnayak at gmail.com> wrote:
>>>>> Hi all,
>>>>> I'm running into this problem.  The system time is set to 1970 after every
>>>> your RTC is broken.
>>>>> system reboot. The first time I enable ntpd it is contacting the ntp source
>>>>> and getting the updated time. However it is unable to change the system
>>>> How are you starting ntpd?
>>>> What flags?
>>>>> time immediately. Only after I stop the service and start it again does the
>>>>> system time get changed. Has anyone else observed this behaviour? Also is
>>>>> there any way to iteratively consult the various server addresses given in
>>>>> the ntp.conf file?
>>>>> Regards,
>>>>> Arpith
>>> On some, or many machines, the hardware clock (time of day) is sustained
>>> by a "coin cell" battery when power is off!  Sooner or later this
>>> battery must be replaced.  The ones I've encountered used a "CR-2013"
>>> coin cell.  If investigation reveals that there is such a cell it will
>>> need to be replaced every few years.  Observe the markings
>>> on the old battery and find a battery to match it.  If power is seldom
>>> off and is restored quickly this battery may last for three to six
>>> years! YMMV!!!!
>>> As I recall,the last time I needed such a battery, I purchased it for a
>>> dollar or two at a nearby drug store.
>>> If this does not resolve your problem, seek professional help!
>> Unfortunately on many systems the batter is welded into the system. It
>> is not user replacable. They expect you to throw out the motherboard
>> when the battery dies.
> I've never seen such a system.  I hope I never do!  Who 
> manufactured/distributed this P.O.S???????

I think that the theory might be that in this way the battery will not
fall out accidentally, and it usually lasts long enough (5 years or so)
that the motherboard will be scrapped anyway.


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