This bug was fixed in the package ntp - 1:4.2.8p4+dfsg-3ubuntu3
---------------
ntp (1:4.2.8p4+dfsg-3ubuntu3) xenial; urgency=medium
* debian/patches/ntpdate-fix-lp1526264.patch:
- Add Alfonso Sanchez-Beato's patch for fixing the cannot correct dates in
the future bug (LP: #1526264)
-- Łukasz 'sil2100' Zemczak <[email protected]> Wed, 24 Feb
2016 12:29:32 +0100
** Changed in: ntp (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1526264
Title:
ntpdate fails with invalid argument when device is set to a date in
the future (delta > 2^16)
Status in Canonical System Image:
Fix Committed
Status in ntp package in Ubuntu:
Fix Released
Status in ntp package in Ubuntu RTM:
Fix Released
Bug description:
current build number: 204
device name: krillin
channel: ubuntu-touch/rc-proposed/bq-aquaris.en
when the current date of the device is in the future, ntpdate fails
with 'Invalid Argument'
For example:
* current date: passed
root@ubuntu-phablet:~# date
mardi 15 décembre 2015, 12:01:22 (UTC+0100)
root@ubuntu-phablet:~# ntpdate ntp.ubuntu.com
15 Dec 12:01:38 ntpdate[4360]: adjust time server 91.189.94.4 offset 0.000150
sec
* Date in the past: passed
root@ubuntu-phablet:~# date -s '2015-12-14 13:00:00'
lundi 14 décembre 2015, 13:00:00 (UTC+0100)
root@ubuntu-phablet:~# ntpdate ntp.ubuntu.com
15 Dec 12:03:02 ntpdate[5008]: step time server 91.189.89.199 offset
82943.900852 sec
* Date in the future: Failed
root@ubuntu-phablet:~# date -s '2015-12-16 13:00:00'
mercredi 16 décembre 2015, 13:00:00 (UTC+0100)
root@ubuntu-phablet:~# ntpdate ntp.ubuntu.com
16 Dec 13:00:10 ntpdate[4820]: Can't adjust the time of day: Invalid argument
After some experimentation, ntpdate fails if the difference between
the current time on the device and the real time is bigger than 2^16
(65536)
= Workaround =
Use option -b
root@ubuntu-phablet:~# date -s '2015-12-16 13:00:00'
mercredi 16 décembre 2015, 13:00:00 (UTC+0100)
root@ubuntu-phablet:~# ntpdate -b ntp.ubuntu.com
15 Dec 12:07:08 ntpdate[7083]: step time server 91.189.94.4 offset
-89602.883248 sec
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