ah I see. following my own advice comes in handy sometimes . . . as in
GitBisect. A bit out of my abilities.

On Sun, Jul 12, 2015 at 1:41 PM, William Hermans <[email protected]> wrote:

> *Yeah, I think the transition to linear irq domain (added at 3.18) made
>> cpsw*
>> * a little extra flaky. Plus the new omap_8250 serial driver is not
>> bug-free;*
>> * just found a flow control bug in the h/w last week.*
>>
>> * I've had ssh shells go sideways on occasion, but not with that kind of*
>> * regularity or effect.*
>>
>> * Like I said, the right diagnostic method is bisecting the kernel.*
>> * It's going to take a while (multiple days) if several hours are
>> required to*
>> * distinguish good from bad kernel.*
>>
>> * Regards,*
>> * Peter Hurley*
>
>
> Hi Peter. "bisecting the kernel" is unknown to me. As in the meaning, But
> I was wondering if some sort of remote, and very verbose logging might not
> help ?  Currently I'm in the process of reading / learning advanced Linux
> programming, and have all these crazy ideas of what we could do. Just not
> sure what to "trap" and exactly 100% how to trap it.
>
> On Sun, Jul 12, 2015 at 1:29 PM, Peter Hurley <[email protected]>
> wrote:
>
>> On 07/12/2015 03:35 PM, Graham Haddock wrote:
>> > Hi William:
>> > Doing nothing with the board.  It is just sitting on the side connected
>> to +5V power and Ethernet.
>> > So, for example, late last night (Central US time) I loaded
>> "bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img"
>> > onto a trusted uSD card expanded the memory using gparted to the full
>> 16GB, and turned off the four blue
>> > blinky lights. No other changes.
>> >
>> > Then I went to bed.
>> >
>> > Reading syslog,
>> > (Times are GMT, boot completion defined as systemd updating the time to
>> network time.
>> >
>> > the initial boot (completion) was at JUL 12, 05:09:27
>> > the lab was quiet, lights off, nothing running.
>> > The BBB automously rebooted at 08:25:33, 13:13:22, and 14:32:27
>> >
>> > I am now rerunning with untouched reload of
>> "bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img"
>> > Just load, install and boot.  Talk to command line by SSH.
>>
>> Yeah, I think the transition to linear irq domain (added at 3.18) made
>> cpsw
>> a little extra flaky. Plus the new omap_8250 serial driver is not
>> bug-free;
>> just found a flow control bug in the h/w last week.
>>
>> I've had ssh shells go sideways on occasion, but not with that kind of
>> regularity or effect.
>>
>> Like I said, the right diagnostic method is bisecting the kernel.
>> It's going to take a while (multiple days) if several hours are required
>> to
>> distinguish good from bad kernel.
>>
>> Regards,
>> Peter Hurley
>>
>> --
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>
>

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