Re: Ubuntu 20.04 resume time problem
Glenn McIntosh via linux-aus <[email protected]>
| Newsgroups | gmane.linux.australia |
|---|---|
| Message-ID | <[email protected]> |
On 28/6/22 12:15, Russell Coker via linux-aus wrote: > I've configured it > for "RTC in local TZ" with timedatectl so it can have the same time as Windows > The problem is that I resume from suspend and the system immediately treats the > RTC as if it was in UTC thus being out by 10 hours (time zone +1000). > How does Ubuntu get the time from the RTC on resume? Wasn't able to replicate on Debian, but from what I understand the system clock can get set from RTC in two places 1) if CONFIG_RTC_HCTOSYS is enabled in the kernel, then the RTC will be read on boot when the RTC driver is initialized; I think it is assumed the RTC is in UTC, as the kernel cannot know the timezone 2) systemd will later set the clock (using /etc/adjtime to determine if it is UTC or local time) I imagine if the systemd one doesn't trigger on resume for some reason, you would get the symptoms you are experiencing. Glenn -- pgp: 833A 67F6 1966 EF5F 7AF1 DFF6 75B7 5621 6D65 6D65 _______________________________________________ linux-aus mailing list [email protected] http://lists.linux.org.au/mailman/listinfo/linux-aus To unsubscribe from this list, send a blank email to linux-aus-unsubscribe-cunTk1MwBs8iFSDQTTA3OBCuuivNXqWP@public.gmane.org