My advice to Erik is that, if he has something important to do, to go back
to an official release.  He should use a "Beta" release only if he can
afford the additional problems it might bring, and in this case there are
some.  In my application for the BBB, I do not use or want to use the USB
connector. The previous kernels worked fine with the +5V power.  Although
the +5V versus USB power behavior could be an important clue to what the
problem is.

==

When you say "powered by USB" are you also running the USB g_multi
interface to a PC and engaging the driver in the PC?

Or, are you just powering it via the USB connector and not using/engaging
the USB subsystem in the BBB?

I think there are (at least) two variables here.

I will go power my BBB via the USB connector, which will power the Vusb
line, but without any USB activity on the USB connector and see what
happens.

I agree that systemd is not the likely problem, since kernel 3.14 uses
systemd, and works fine, USB or +5V connector.

My personal observation is that the less the BBB is doing, the more likely
the self-reboot is to happen.
If I turn off the four blinking blue LEDs, with the BBB not doing anything
else, the reboots seem to happen more often.
So, if you are powering the USB connector from a computer, it may be the
USB activity, not the power source that is changing the behavior.

--- Graham

==



On Sun, Jul 19, 2015 at 10:11 AM, William Hermans <[email protected]> wrote:

> Graham, thats where you're wrong. I've been using all those testing
> kernels EXACT SAME KERNELS you've been having troubles with. Except, I'm
> not having troubles with them. Why ? Becasue I'm powering via USB.
>
> So if you REALLY want to prove the problem this won't work for *you* try
> powering via USB . . .
>
> On Sun, Jul 19, 2015 at 7:55 AM, Graham <[email protected]> wrote:
>
>> Eric:
>> You never said what you were trying to do with the BBB, and why you need
>> Debian 8.1/kernel 4.x.x.
>> As you have seen, it is temporarily broken, but is being worked on. This
>> is a "test" release, and not recommended for active use, unless you like
>> adventures, like you are having.
>>
>> If you need the capemanager, consider Debian 7.8/kernel 3.8
>>
>> If you don't need the capemanager, but need some other benefit of Debian
>> 8, then use Debian 8.x and kernel 3.14.
>>
>> Both of these options are solid, do not reboot by themselves, and don't
>> care whether it is powered from the 5V barrel connector or USB.
>> --- Graham
>>
>> ==
>>
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