On 12/11/2016 7:01 PM, geo.inbox.ignored wrote:
- part 1: clock losing time first noticed time was off by 8 min, reset via F2 cl terminal. ~40 min later, off by ~2 min, reset via 'service manager' by stopping ntpd, count 20, started ntpd, within a few seconds, clock reset to correct time. ~1 hour later, noticed clock off again, considered cause to be cmos battery failing. after removing ~30 screws and bottom cover, found that cmos batter was soldered to board. checked with dvom, voltage read 3.2v with main battery and charger removed. ran web search on tower box to find that cmos battery is a rechargeable 3.0 v battery and being that removing screws and cover took several minutes, with battery being up, cause must be elsewhere.
normally, the CMOS clock is just used to set the system time when the system boots (or wakes up from sleep/hibernate), after that the time is maintained by the OS via timer interrupts.
my usual solution to time problems is to configure ntpd, but that may not be suitable for a laptop.
the tzdata is used for time zone offsets, daylight savings time computations, etc. it should have no impact on the time of day maintained by the kernel.
-- john r pierce, recycling bits in santa cruz _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos
