Thanks for the response! I'd thought about temperature as an issue....I'll have to dig into this.
I'd done some testing of beaglebones in a hotbox before this deployment and I ran things up pretty hot (like 65C for multiple hours) and never had an issue with the beaglebones....but let me investigate and see if i can find a correlation between high temp and these crashes. --- Andris Bjornson | EveryLayer <http://www.everylayer.com/> skype: andris.bjornson On Mon, Apr 6, 2015 at 5:58 PM, Graham <gra...@flex-radio.com> wrote: > What is the ambient air temperature the BBB is operating in? > I would measure the temperature of the Sitara chip. > Perhaps it is running on the high side. > There is built in die temperature sensor, although I don't know how easy > it is to read it. > > Either, based on data, or as an experiment, put a heat sink on the Sitara > and/or blow some air over the BBB > > > --- Graham > > == > > > On Monday, April 6, 2015 at 6:30:45 PM UTC-5, Andris Bjornson wrote: >> >> Hi all, >> >> I've deployed a number of Beagle Bone black units in West Africa as part >> of an emergency connectivity relief effort to support NGOs working to fight >> the Ebola outbreak. The beaglebones are providing a simple network >> monitoring function. >> >> The beaglebones were imaged in November with the Ubuntu flasher >> downloaded from here http://elinux.org/BeagleBoardUbuntu#Flasher (The >> version of the image is BBB-eMMC-flasher-ubuntu-14. >> 04.1-console-armhf-2014-10-29-2gb.img) >> >> I'm having an issue with a few of the beaglebones hanging unpredictably, >> and I know I should provide some more information to help diagnose...but >> I'm having a hard time finding any "smoking gun" of what's causing the >> hang. The beaglebones are in remote telco sheds monitoring network >> equipment - so one of my challenges is that I don't have a monitor >> connected or anyone I can ask "whats on the screen." Fortunately I do have >> the ability to power cycle remotely (see below). >> >> Here's what I know: >> >> 1. The beaglebones have not been modified much at all from the >> standard base flasher image. Just a few monitoring tools I've added from >> apt packages (smokeping and zabbix-proxy) I use these tools elsewhere, >> and >> I've never had an issues with them hanging a system. >> 2. The systems run for weeks at a time just fine >> 3. At some point, the systems in question will "hang". They stop >> responding to pings, but the ethernet port of the router they are >> connected >> to still shows a link light. >> 4. Because I have the beaglebone connected to a >> remote manageable power strip / PDU, I am able to power cycle the >> beaglebone when this happens. This causes the unit to boot normally, and >> it functions normally before the problem reoccurs another few weeks later. >> >> >> Each beaglebone is powered by a dedicated 5V / 1A power supply connected >> to its barrel connector. Other equipment at the site does not hang or >> reboot - so I know the beaglebone hang does not coincide with a power issue >> at the site. >> >> Can anyone give me any tips on diagnosing this? I can see the time of >> hang and powercycle in dmesg and syslog....but there's no hint there as to >> what happened. Everything was "all conditions normal" before the hang. >> >> Has anyone seen this behavior before? >> >> Thanks so much - any help greatly appreciated! >> >> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/f6-QXKbDUZo/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
