A likely culprit is the power supply.

On Friday, November 24, 2017 at 7:55:56 AM UTC-7, Graham wrote:
>
> I have two PocketBeagles.
>
> Both are exhibiting random reboots, two to four times per day. No 
> indication in syslog as to any cause or problem. No pattern to 
> the reboots. Can happen while I an logged into the PB editing python 
> scripts with nano, or can happen in the middle of the night when 
> absolutely nothing is happening.
>
> Both are powered from Vin, running from a trusted lab bench supply 
> with plenty of reserve current. I have added extra bulk capacitance on 
> the Vin input, and also switched lab bench supplies to make sure it 
> was not a power supply problem.
>
> So, no USB-gadget interface running.
> No modifications to hardware or kernel. No modifications to the 
> system software.
>
> One is running the Oct 10 IoT release version
> bone-debian-9.2-iot-armhf-2017-10-10-4gb.img
> Linux PB1 4.4.91-ti-r133 #1 SMP Tue Oct 10 05:18:08 UTC 2017 armv7l
>
> The other is running the Stretch IoT weekly snapshot from 11-19
> bone-debian-9.2-iot-armhf-2017-11-19-4gb.img
> Linux beaglebone 4.9.61-ti-r76 #1 SMP PREEMPT Mon Nov 13 20:24:26 UTC 2017 
> armv7l
>
> Both are running USB2 to Ethernet dongles on USB Port1 so I can have 
> remote Ethernet access. To make sure it was not the USB-to-Ethernet 
> drivers, I ran one for a day, without the Ethernet interface, just 
> watched it on the UART0 Console Port, no programs running,
> and it still does the same thing.
>
> I think this should be easy to reproduce.
>
> Same/similar symptoms to the random reboots we were having on the BBB a 
> year or two ago.
>
> --- Graham
>
> ==
>

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