Thanks a lot for this analysis. I will update the image tomorrow as we try to root source the problem on the old images.
> On Dec 17, 2017, at 4:10 PM, Graham <[email protected]> wrote: > > Some further information. > > I have been unable to get your latest Stretch 9.3 IoT image to fail and > autonomously reboot, when powered by Vin (P1-pin1) > ie.: " bone-debian-9.3-iot-armhf-2017-12-10-4gb.img" > > I am starting an extended test today, and letting two PBs run for the rest of > the week, on this version. > Same power supply, no added bulk capacitance on Vin. > > Your recommended PB release version 2017-10-10 definitely does randomly > reboot when Vin powered, as do all the Stretch 9.2 weeklies up to Dec 03. > that is, > bone-debian-9.2-iot-armhf-2017-10-10-4gb.img > through > bone-debian-9.2-iot-armhf-2017-12-03-4gb.img > > As far as your questions about my bench power supply, noise/ripple on the > supply is at floor of scope's ability to measure, ie, < 12 mV. > Regulation of bench supply, less than 10 mV droop from 0.0A to 1.0A > Voltage set at 5.00 Volts, current limiter set at 5A, so out of the circuit. > > Adding or deleting bulk capacitance (100 uF tantalum) at P1-pin makes no > difference in the behavior. > > I am convinced that this is not a supply side power problem, and is some kind > of software issue, hopefully already resolved in Stretch 9.3. > > --- Graham > > == > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/af9342e4-e9f6-4c99-af1d-f556b9198fa9%40googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/ABFC9B56-E1A9-4E2A-BBCA-7E609F12C200%40gmail.com. For more options, visit https://groups.google.com/d/optout.
