Hi Robert,

Updating to the Jessie image seems to solve the issue! Thank you for your 
input!

But the Jessie image seems to have another bug that I can't seem to figure 
out.

The Rx/Tx pins on SPI1 seem to be flipped. Attempting to modify this in the 
device tree overlay does not seem to work.

I've already got hardware built. So at this point I can't work with the 
pins being switched. But I need that ethernet bug fixed.

Any ideas?

Thank you!



On Thursday, April 14, 2016 at 12:55:10 PM UTC-7, RobertCNelson wrote:
>
>
>
> On Thu, Apr 14, 2016 at 2:10 PM, <[email protected] <javascript:>> wrote:
>
>> Hello,
>>
>> I work for an energy technology company, and we use Beaglebone Black's in 
>> our product line. Over the last 2 years there has been a consistent trouble 
>> with the ethernet port, and I wonder if there is a fix for this or if 
>> anyone else is aware of it.
>>
>> Running any of the Debian images from 2014 to present on a Beaglebone 
>> Black, unless the ethernet cable is plugged in and connected to a network 
>> device (switch, modem, etc) before powering on the beaglebone black it will 
>> not connect to the network. It won't pull a DHCP address. It will not 
>> connect with a static IP Address. And if the beaglebone is plugged into a 
>> network switch and you power cycle the switch, connectivity seems to be 
>> permanently lost until you also reboot the Beaglebone black. Alternatively, 
>> if you just unplug the ethernet cable for 30 seconds to a minute, it will 
>> also loose network connectivity.
>>
>> Connected the Beaglebone Black to your PC via USB, and connect the 
>> Beaglebone Black to an ethernet cable which runs to a network switch. You 
>> can ping google, etc no problem the Beaglebone has internet connectivity. 
>> Disconnect the ethernet cable, wait 30 seconds to a minute and reconnect 
>> the cable. The beaglebone black will no longer connect to the internet. 
>> Bringing the interface down and up again does not seem to fix the issue.
>>
>> Sometimes this doesn't happen though. Sometimes different boards seem to 
>> work no problem. So it confuses me, why do some boards work and others not?
>>
>> There are situations where, like I deal with yesterday, at a clients 
>> house they have a power outage. One of our beaglebone device are running 
>> off an alternate battery-powered source and continues running no problem, 
>> but the rest of the networking equipment looses power. When their power 
>> comes back on, the networking stuff turns back on and the client is able to 
>> connect to their wifi and surf the web without issue, but the Bealgebone 
>> refuses to connect to the network or connect to our servers over the 
>> internet.
>>
>> What is the cause of this bug? Is there a fix for it? Can the fix be 
>> remotely implemented? Is it a relatively safe fix, or is there a 
>> substantial chance I could brick the beaglebone?
>>
>> Any help would be appreciated as I have pulled my hair out over this 
>> issue for the last 2 years.
>>
>
> This should be fixed in the jessie image's (iot or lxqt) (NOT console) as 
> the iot/lxqt images have connman controlling eth0..
>
> Regards,
>
> -- 
> Robert Nelson
> https://rcn-ee.com/
>

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