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Re: Abysmal clock chip on netwinder?

On Sun, Jan 25, 2004 at 09:44:19PM +0100, Adrian 'Dagurashibanipal' von Bidder wrote:
> Is anythin known about the builtin clock on netwinders? After a short time
> running, ntpd runs away and ends up detecting all available time sources as
> falsetickers or unavailable, and the frequency running away to (-)500.00,
> with a huge jitter (several 100s)

Hmm, _without_ NTP running it is a known issue.  But with NTP your
clock should be solid.  For example this is netwinder.org's current
output for 'ntpq -c pe':

+time.nrc.ca     tic.nrc.ca  2 u  396  512  377  313.296  143.173 143.749
*ntp0.usno.navy. .USNO.      1 u  443  512  377  166.212   -0.985  23.966

(There always seems to be considerable delta between NRC and USNO,
which I don't understand...)

Check what revision of netwinder hardware you have (/proc/cpuinfo).
In the very early models the clocks were "shaken" but that was
corrected for Rev 4 and 5 - the firmware picks a nonshaken clock and
calibrates itself against the RTC.

Ralph Siemsen

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