RSB-3730 RTC
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Revision as of 10:05, 9 November 2023 by Xingxing.li (talk | contribs) (Created page with " '''1. Disable rtc sync service.''' <pre># systemctl disable ntpd.service Removed /etc/systemd/system/multi-user.target.wants/ntpd.service. # systemctl stop systemd-timesyncd...")
1. Disable rtc sync service.
# systemctl disable ntpd.service Removed /etc/systemd/system/multi-user.target.wants/ntpd.service. # systemctl stop systemd-timesyncd # systemctl stop ntpdate.service
2. Set system time to current, then write to RTC.
# date 021710452016 && hwclock -w && date Wed Feb 17 10:45:00 UTC 2016 Wed Feb 17 10:45:01 UTC 2016
3. Set one incorrect time, then read time from RTC to verify.
# date 010100002000 && hwclock -r && date Sat Jan 1 00:00:00 UTC 2000 2016-02-17 10:45:06.361513+00:00 Sat Jan 1 00:00:00 UTC 2000
4. Restore the RTC time to system time.
# hwclock -s && date Wed Feb 17 10:45:13 UTC 2016