I had an early Phenom II that lost time while turned on but the internal CMOS clock did not so rebooting or reading the CMOS clock restored the correct time. There was a problem with the System Management Mode code and The C1E CPU state which was new at that time where an interrupt was being lost. Disabling the low power CPU state fixed it until a BIOS update was released.
It has been a while but as I recall, the NTP client kept the OS from drifting further behind but the time was still noticeably off. On Fri, 5 Oct 2012 00:42:42 -0400, Bob Bownes <[email protected]> wrote: >David, > >The problem is that they start in sync and over the course of a day drift that >far apart despite having NTP running. We're not sure why NTP isn't correcting >it along the way. Though at this point, we are looking at a firmware bug. > >Thanks! >Bob > >On Oct 5, 2012, at 12:30 AM, "David J Taylor" <[email protected]> >wrote: > >> The problem stems from one of the two (identical) machines drifting off by >> 60-70 seconds per day. So a few ms here and there are ok. >> [] >> Bob >> ================================== >> >> Bob, >> >> NTP is normally limited to a +/- 500 parts per million correction - 43 >> seconds per day. You may be operating outside the range NTP is expecting to >> handle. If the clock offset is a stable value of 60-70 seconds per day you >> can bias NTP to correct within +/- 500 ppm of that drift. >> >> Cheers, >> David >> -- >> SatSignal Software - Quality software written to your requirements >> Web: http://www.satsignal.eu >> Email: [email protected] >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > >_______________________________________________ >time-nuts mailing list -- [email protected] >To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
