Time drift issues
#2
(10-17-2019, 06:30 AM)Unkn0wn Wrote: Thanks for your help. Would you say running hwclock -s is a reliable temporary solution?
Those kernel messages are interesting though.

Moved from link see for background details.  Unfortunately, I've had varied results with hwclock -s. If it works it's better than nothing but it can throw the clock a few microseconds in either direction and software may not like that.  However, while module 1 appears to be completely cured module 2 is still going down.  If we look at the PSU as changing parameters, then I believe the attached serial wires on module 1 may be affecting this as well.  If this is true, then it's very possibly a hardware issue with the board itself. Changing PSU and having dangling wires could change the noise and parasitic capacitance causing the SoC to misbehave. I'm not an EE and lack the tools to properly investigate that line of thinking.

I've updated module 2 to use hwclock -w; hwclock -s .  This should minimize clock jumps by first saving the RTC and then loading it but it's only been 24 hours.  Next time it goes down, I'm pulling the serial wires and moving them to module 2 and observing what happens.


Messages In This Thread
Time drift issues - by Unkn0wn - 10-10-2019, 05:48 PM
RE: Time drift issues - by venix1 - 10-17-2019, 09:16 AM
RE: Time drift issues - by Unkn0wn - 10-17-2019, 10:01 AM
RE: Time drift issues - by venix1 - 10-17-2019, 07:14 PM
RE: Time drift issues - by venix1 - 12-09-2019, 03:22 PM
RE: Time drift issues - by venix1 - 03-12-2020, 09:00 AM

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