On Sun, Jul 8, 2012 at 11:41 AM, E Frank Ball III <[email protected]> wrote: > On Sat, Jul 07, 2012 at 11:12:25AM -0400, Justin Piszcz wrote: > > Hello, > > > > I migrated from an X7SPA to an X9SCM-F-O and now gpsd/ntp no longer sync > > with my GPS unit: > > http://www.amazon.com/GlobalSat-BU-353-USB-GPS-Receiver/dp/B000PKX2KA > > > > I did some digging and it looks like the system clock on this motherboard > > with the latest BIOS (2.00a) runs 1 second too fast when comparing to other > > NTP-synchronized machines. > > > > When comparing the clock on this vs. an atomic clock, the system clock is > ~1 > > second faster, which is probably why the GPS has problems syncing. > > > > Is this a faulty motherboard clock or is this an issue with Ivy Bridge (I > am > > using an E3-1200 V2 CPU) with the X9SCM-F-O and BIOS 2.00a? > > > I've never had to do this for bare hardware, but my virtual machines > keep better time if I add the boot paramter divider=10.
Hi, I am working with Supermicro, the X9SCM-F is a special board in that: SM: "Please note the X7 have power saving stage at C3 whereas for X9 it has c7. All these add-on feature we suspect may accounted for the drift/offset as well." I am working with them to see what the next steps are to fix the problem if possible. Justin. _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
