I've run into the BBB random reboot problem a while ago. We've eventually 
found out the root cause is the USB-OTG detection. The USB-OTG periodical 
probing actually caused the problem. Details and fix please the link below:
https://groups.google.com/forum/#!searchin/beagleboard/unexpected$20reset/beagleboard/xPxzYyNsA78/DOlXIlyYTqIJ

However my fix was based on the 3.2 kernel. I am not familiar with the 
kernels you are working with. And I don't know if the USB-OTG is root cause 
in your case.

BBB and BBW have different PMIC designs. You could take a look at the 
schematic.

If you really want to isolate out the hardware, you can try to patch and 
build from 3.2 kernel to see if BBB still reboots. I have mulitple systems 
running for months and never had any random reboot issues.

I hope this helps.

Lei Wang


On Tuesday, October 14, 2014 2:42:43 AM UTC-4, William Hermans wrote:
>
> I do not know what to tell you other than . ..
>
>
>
>
> *william@arm:~$ uptime 23:30:30 up 26 days,  6:34,  1 user,  load average: 
> 0.00, 0.01, 0.05*
> This board is also loading it's rootfs via NFS, so it is constantly using 
> the local network. SO, this has been an ongoing problem for you, and going 
> on longer than a month ? Well All i can say is that you better get busy and 
> finding your problem. I suggest you start from a scratch build, and 
> incrementally install what you need one bit of software at a time until 
> something starts misbehaving. This is very obviously a software issue, and 
> despite what you say about having watchdog disabled I'm still of the 
> opinion that this *has* to be watchdog related. Otherwise you'd be 
> broadcasting a system wide kernel signal.
>
>
>
> On Mon, Oct 13, 2014 at 11:02 PM, Thomas Olofsson <[email protected] 
> <javascript:>> wrote:
>
>> We still have the same issues with reboots as well. we have had to move 
>> our project to bbw for now instead. the bbw with the same kernel and no 
>> reboots for two weeks. The BBB reboots on an average og 1-2 times per 24 
>> hours independent of load.
>>
>> No serial messages. No kernel messages, no oops. We have also tried a 
>> kernel wo watchdog support with no avail...
>>
>> Any suggestions is highly appreciated at this point..
>>
>> --Skjortan!
>>
>> On Mon, Oct 13, 2014 at 8:37 PM, Greg Kelley <[email protected] 
>> <javascript:>> wrote:
>>
>>> Mine is still resetting one to three times a day. I have moved both 
>>> processes I was running on it (CUPS and weewx) over to my RasPi so it is 
>>> just sitting idle except for CRON jobs. No events in serial debug logs, 
>>> just a sudden reset and cold boot restart.
>>>
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