On 01.09.20 14:55, Niresh wrote:
I purposefully disconnected the battery to confirm system time updates
with external RTC time. But the below message shows not updated right.
Local time: Tue 2020-09-01 10:32:27 UTC
Universal time: Tue 2020-09-01 10:32:27 UTC
RTC time: Sat 2000-01-01 00:15:42_
Ah, you're expecting the system time to be set to 2000-01-01? Won't
happen. RTC knows it's been reset and because of that the system refuses
to sync with it.
The reason why your system time is close to accurate (but still off by
several minutes, if you check) after everything has been powered off is
due to a fallback method in timesyncd. It will occasionally (e.g. on NTP
sync and on shutdown) store the current timestamp in a magic file on
disk. If there is no source of time available during boot (no RTC and no
NTP) then timesyncd will declare the value of that timestamp as current
time. At least it guarantees a monotonously increasing time.
--
Kind regards,
Tarmo
--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to beagleboard+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/beagleboard/338861fc-3973-12a5-e0e9-6fc979c9dfc3%40gmail.com.
