ntp problems on dapper/edgy

Luis lemsx1 at gmail.com
Wed Aug 30 20:08:03 UTC 2006


I've been having a problem with the time of a computer that keeps
going faster than it should be. I tried everything I could think of to
get it back to normal, even a hackish hourly script that did:

$> cat /etc/cron.hourly/fixdateandtime

#!/bin/sh

# 2006-06-07 11:50 EDT

#

/etc/init.d/ntp-server stop > /dev/null

ntpdate ntp-1.local > /dev/null 2>&1 || \

    ntpdate pool.ntp.org > /dev/null 2>&1

hwclock --systohc > /dev/null

hwclock --adjust > /dev/null

/etc/init.d/ntp-server start > /dev/null

My ntp-1.local server works fine. There are many computers connected
to that server and they are all working fine (even Ubuntu systems
running Dapper/Edgy on other computers). The problem seems to be with
the hardware of this computer in question.

After an hour or so, the time starts to get skewed up (faster) and
this is what I see from ntpq:

$> ntpq

ntpq> lpeers

     remote           refid      st t when poll reach   delay   offset  jitter

==============================================================================

 10.10.201.31    .INIT.          16 u    - 1024    0    0.000    0.000 4000.00

 64.15.175.5     .INIT.          16 u    - 1024    0    0.000    0.000 4000.00

 fiordland.ubunt 192.36.133.17    2 u  135 1024  377  183.562  -642867 110100.

*LOCAL(0)        LOCAL(0)        13 l    7   64  377    0.000    0.000   0.001

What can I try to fix this? I was thinking this is related to a bad
rtc driver, but that doesn't seem to be it.

These are a few lines from the log:
Aug 30 09:32:41 cypher ntpd[7453]: ntpd 4.2.0a at 1:4.2.0a+stable-8-r Fri
Jun 30 17:31:18 UTC 2006 (1)

Aug 30 09:32:41 cypher ntpd[7453]: precision = 1.000 usec

Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface wildcard, 0.0.0.0#123

Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface wildcard, ::#123

Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface lo, 127.0.0.1#123

Aug 30 09:32:41 cypher ntpd[7453]: Listening on interface eth0, 10.21.11.57#123

Aug 30 09:32:41 cypher ntpd[7453]: kernel time sync status 0040

Aug 30 09:32:41 cypher ntpd[7453]: frequency initialized -5.995 PPM
from /var/lib/ntp/ntp.drift

Aug 30 09:35:58 cypher ntpd[7453]: synchronized to LOCAL(0), stratum 13

Aug 30 09:35:58 cypher ntpd[7453]: kernel time sync disabled 0041

Aug 30 09:37:01 cypher ntpd[7453]: kernel time sync enabled 0001

Aug 30 09:38:05 cypher ntpd[7453]: synchronized to 82.211.81.145, stratum 2

Aug 30 14:18:05 cypher ntpd[7453]: synchronized to LOCAL(0), stratum 13

Aug 30 15:43:29 cypher ntpd[7453]: synchronized to 82.211.81.145, stratum 2

Aug 30 16:00:33 cypher ntpd[7453]: synchronized to LOCAL(0), stratum 13


I also see these errors:

$> cat /var/log/syslog| grep set_rtc

Aug 30 16:01:02 cypher kernel: [17203441.224000] set_rtc_mmss: can't
update from 59 to 1

Aug 30 16:01:03 cypher kernel: [17203442.224000] set_rtc_mmss: can't
update from 59 to 1

Aug 30 16:01:05 cypher kernel: [17203444.224000] set_rtc_mmss: can't
update from 59 to 1

Aug 30 16:01:06 cypher kernel: [17203445.224000] set_rtc_mmss: can't
update from 59 to 1

Aug 30 16:01:07 cypher kernel: [17203446.224000] set_rtc_mmss: can't
update from 59 to 1

Aug 30 16:01:08 cypher kernel: [17203447.224000] set_rtc_mmss: can't
update from 59 to 1

Aug 30 16:01:09 cypher kernel: [17203448.224000] set_rtc_mmss: can't
update from 59 to 1

Aug 30 16:01:10 cypher kernel: [17203449.224000] set_rtc_mmss: can't
update from 59 to 1

-- 
----)(-----
Luis Mondesi
*NIX Guru

Kiskeyix.org

"We think basically you watch television to turn your brain off, and
you work on your computer when you want to turn your brain on" --
Steve Jobs in an interview for MacWorld Magazine 2004-Feb

No .doc: http://www.gnu.org/philosophy/no-word-attachments.es.html




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