Package: tzdata
Version: 2016a-1
Severity: normal
Hi,
I lately upgraded my system to current Strech.
Since that day, my clock is set one hour in advance after each reboot.
The proper settings are in "/etc/adjtime", i.e. "LOCAL".
The link "/etc/localtime" is set to my timzeone
"/usr/share/zoneinfo/Europe/Paris".
When I run "hwclock -s" manually after boot, system time is set accordingly to
the local time from the hw clock.
The incorrect time happens to be applied when running "/lib/udev/hwclock-set",
the timezone info does not seem to be available or used at that time, and then
hwclock sets the system to UTC from the hardware clock, which is read as UTC
eventhough it is registered as "LOCAL" in "/etc/adjtime". So, my UTC system
time is one hour in advance, since my hardware clock is at CET, i.e. UTC+1.
I downgraded to "tzdata-2015g-0+deb8u1", and it behaved the expected way: the
system clock is set to UTC after reboot when reading the local time from the
hardware clock.
I don't know how the "tzdata" package affects this, here are some logging
information gathered with "tzdata-2015g-0+deb8u1" and "tzdata-2016a-1"
packages. I also attach the modified "/lib/udev/hwclock-set" script I used to
get this logging information.
The noteworthy part is that when running "date" (last printed line of each
set), the displayed timezone is "CET" in Jessie package, and "UTC" in current
Strecth package. So, when "hwclock" sets the time to local time, it seems to
see "local time" as "UTC" in Strech.
When I set "UTC" in "/etc/adjtime", it behaves normally: no timezone
conversions are needed indeed.
Regards,
Christophe
-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (985, 'testing'), (120, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.3.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
Versions of packages tzdata depends on:
ii debconf [debconf-2.0] 1.5.58
tzdata recommends no packages.
tzdata suggests no packages.
-- debconf information:
tzdata/Zones/Pacific:
tzdata/Zones/Antarctica:
* tzdata/Areas: Europe
* tzdata/Zones/Etc: GMT+1
tzdata/Zones/Indian:
tzdata/Zones/Arctic:
tzdata/Zones/US:
tzdata/Zones/SystemV:
tzdata/Zones/Africa:
tzdata/Zones/America:
* tzdata/Zones/Europe: Paris
tzdata/Zones/Atlantic:
tzdata/Zones/Australia:
tzdata/Zones/Asia:
#!/bin/sh
# Reset the System Clock to UTC if the hardware clock from which it
# was copied by the kernel was in localtime.
dev=$1
if [ -e /run/systemd/system ] ; then
exit 0
fi
if [ -e /run/udev/hwclock-set ]; then
exit 0
fi
if [ -f /etc/default/rcS ] ; then
. /etc/default/rcS
fi
# These defaults are user-overridable in /etc/default/hwclock
BADYEAR=no
HWCLOCKACCESS=yes
HWCLOCKPARS=
HCTOSYS_DEVICE=rtc0
if [ -f /etc/default/hwclock ] ; then
. /etc/default/hwclock
fi
echo "* hwclock-set" >> /run/udev/hwclock-set
hwclock -r --debug >> /run/udev/hwclock-set
date >> /run/udev/hwclock-set
if [ yes = "$BADYEAR" ] ; then
/sbin/hwclock --rtc=$dev --systz --badyear
/sbin/hwclock --rtc=$dev --hctosys --badyear
else
/sbin/hwclock --rtc=$dev --systz
echo "* hwclock-set: --systz" >> /run/udev/hwclock-set
hwclock -r --debug >> /run/udev/hwclock-set
date >> /run/udev/hwclock-set
/sbin/hwclock --rtc=$dev --hctosys
echo "* hwclock-set: --hctosys" >> /run/udev/hwclock-set
hwclock -r --debug >> /run/udev/hwclock-set
date >> /run/udev/hwclock-set
fi
# Note 'touch' may not be available in initramfs
#> /run/udev/hwclock-set
* hwclock-set
hwclock from util-linux 2.27.1
Using the /dev interface to the clock.
Last drift adjustment done at 1457178708 seconds after 1969
Last calibration done at 1457178708 seconds after 1969
Hardware clock is on local time
Assuming hardware clock is kept in local time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2016/03/05 12:52:21
Hw clock time : 2016/03/05 12:52:21 = 1457178741 seconds since 1969
Time since last adjustment is 33 seconds
Calculated Hardware Clock drift is -1.999986 seconds
Sat Mar 5 12:52:20 2016 .140813 seconds
Sat Mar 5 13:52:21 CET 2016
* hwclock-set: --systz
hwclock from util-linux 2.27.1
Using the /dev interface to the clock.
Last drift adjustment done at 1457178708 seconds after 1969
Last calibration done at 1457178708 seconds after 1969
Hardware clock is on local time
Assuming hardware clock is kept in local time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2016/03/05 12:52:22
Hw clock time : 2016/03/05 12:52:22 = 1457178742 seconds since 1969
Time since last adjustment is 34 seconds
Calculated Hardware Clock drift is -1.999985 seconds
Sat Mar 5 12:52:21 2016 .374139 seconds
Sat Mar 5 12:52:22 CET 2016
* hwclock-set: --hctosys
hwclock from util-linux 2.27.1
Using the /dev interface to the clock.
Last drift adjustment done at 1457178708 seconds after 1969
Last calibration done at 1457178708 seconds after 1969
Hardware clock is on local time
Assuming hardware clock is kept in local time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2016/03/05 12:52:24
Hw clock time : 2016/03/05 12:52:24 = 1457178744 seconds since 1969
Time since last adjustment is 36 seconds
Calculated Hardware Clock drift is -1.999984 seconds
Sat Mar 5 12:52:22 2016 .995018 seconds
Sat Mar 5 12:52:24 CET 2016
* hwclock-set
hwclock from util-linux 2.27.1
Using the /dev interface to the clock.
Last drift adjustment done at 1457179045 seconds after 1969
Last calibration done at 1457179045 seconds after 1969
Hardware clock is on local time
Assuming hardware clock is kept in local time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2016/03/05 12:57:56
Hw clock time : 2016/03/05 12:57:56 = 1457182676 seconds since 1969
Time since last adjustment is 3631 seconds
Calculated Hardware Clock drift is -1.998469 seconds
Sat Mar 5 12:57:55 2016 .600856 seconds
Sat Mar 5 12:57:56 UTC 2016
* hwclock-set: --systz
hwclock from util-linux 2.27.1
Using the /dev interface to the clock.
Last drift adjustment done at 1457179045 seconds after 1969
Last calibration done at 1457179045 seconds after 1969
Hardware clock is on local time
Assuming hardware clock is kept in local time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2016/03/05 12:57:57
Hw clock time : 2016/03/05 12:57:57 = 1457182677 seconds since 1969
Time since last adjustment is 3632 seconds
Calculated Hardware Clock drift is -1.998468 seconds
Sat Mar 5 12:57:56 2016 .171441 seconds
Sat Mar 5 12:57:57 UTC 2016
* hwclock-set: --hctosys
hwclock from util-linux 2.27.1
Using the /dev interface to the clock.
Last drift adjustment done at 1457179045 seconds after 1969
Last calibration done at 1457179045 seconds after 1969
Hardware clock is on local time
Assuming hardware clock is kept in local time.
Waiting for clock tick...
...got clock tick
Time read from Hardware Clock: 2016/03/05 12:57:59
Hw clock time : 2016/03/05 12:57:59 = 1457182679 seconds since 1969
Time since last adjustment is 3634 seconds
Calculated Hardware Clock drift is -1.998468 seconds
Sat Mar 5 12:57:57 2016 .999232 seconds
Sat Mar 5 12:57:59 UTC 2016
