[sudo-access] [sudo-discuss] front door computer randomly turns itself off

[Jenny Ryan]

I reconnected the unplugged extension cord (which was not the same
extension cord, fyi. it has been replaced with a shitty power strip.)
tonight during the 5mof event around 9pm. Things seemed to boot back up but
I didn't check everything thoroughly cuz I wanted to see the presentations
and have replugged this extension cord in and power cycled the beaglebone
twice already this week.

The clearest next steps to me:
* actually label the cords and wires that run the door, so people know
those cords are vital (timeline: two years ago)
* run conduit for the electrical to the door computer enclosure (timeline:
2-3 weeks)
* upgrade access point in the entrance hall (timeline: one week)

it's power that's the issue, and unstable/unlabeled wiring - not ethernet,
it seems to me...
but also everything should boot back up when plugged back in, no?

Lesley made a nice drawing of how to power cycle the beaglebone last night
(why do two cords need to be unplugged & plugged back in?) and we taped it
up inside the enclosure.

I could make labels but I don't know all the wires.

Jenny

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On Wed, May 3, 2017 at 10:38 PM, Jake <jake at spaz.org> wrote:

> this has happened in the past and a couple of times this week, i think,
> that
> the computer that handles the front door magnetic stripe reader shuts
> itself
> off for some reason.
>
> it's a beaglebone black and there is no reason it should shut off.  there
> are
> no logs as to why because we generally run it in read-only mode on the main
> disk, and logs are kept on a RAM disk.
>
> here's someone else talking about the same issue:
> http://falconchristmas.com/forum/index.php?topic=5547.0
>
> when it's off, it has power but there are no lights on.  pressing the power
> button turns it on.  wtf?
>
> i could make a watchdog circuit that power-cycles it if this happens, but i
> don't think that's really the right solution.  does someone want to take
> this
> on and figure out wtf is going on?
>
> probably using a USB stick for system logs would be a good start, and maybe
> some increased level of logging.
>
> -jake
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