William/Wulfman: So far, running on USB Power module (no USB communications) the BBB is staying up. It has been 18 hours or so now. Running the same software that rebooted twice in 24 hours on +5V barrel connector input. I have seen the 'bad' configuration run as long as 36 hours between reboots, so the test needs to continue for at least two days.
Thanks to Maxim for the explanation. If that is the problem, it looks like the problem existed in 2013, a software patch was applied, and the software patch was lost between kernel 3 and kernel 4. --- Graham == On Mon, Jul 20, 2015 at 2:41 AM, Maxim Podbereznyy <lisar...@gmail.com> wrote: > As far as I remember how the Vbus issue was described in details, hope I'm > not mistaken: > Vbus connects to both CPU and PMIC. CPU has a charge-pump circuit to > detect OTG devices (inject some power and track USB signals for incoming > events) and it injects 5V periodically into Vbus line. Sometimes PMIC > detects this 5V on the Vbus input as a good voltage and turns inner power > switch to Vbus where in fact no 5V with sufficient current. Next power > failure and immediate reboot occur > > 2015-07-20 3:08 GMT+03:00 john dough <software...@live.com>: > >> >> >> Sent from my Windows Phone >> ------------------------------ >> From: William Hermans <yyrk...@gmail.com> >> Sent: 7/19/2015 11:11 AM >> To: beagleboard@googlegroups.com >> Subject: Re: [beagleboard] BBB intermittently rebooting. >> >> 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 <gra...@flex-radio.com> 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 >> >> == >> >> -- >> 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. >> >> >> -- >> 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. >> >> -- >> 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. >> > > > > -- > LinkedIn - http://www.linkedin.com/in/maximpodbereznyy > Company - http://www.linkedin.com/company/mentorel > Facebook - https://www.facebook.com/mentorel.company > > -- > 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/2yOpE3XYJ1Y/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.
