William: OK. I plan to let it run for at least two days, perhaps three. --- Graham
On Mon, Jul 20, 2015 at 11:34 AM, William Hermans <[email protected]> wrote: > >> >> *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* > > > Glad to hear that so far everything seems good Graham. So far. However I > have a sneaking suspicion it will continue to run until you decide to shut > it off. Not 100% sure though, hence the need for someone like you to test. > In hopes of narrowing down this problem. > > On Mon, Jul 20, 2015 at 9:10 AM, evilwulfie <[email protected]> wrote: > >> usb0_vbus on the processor is an analog input to a comparator. >> page 80 of the processor ref manual says - USB0_VBUS (7) Supply voltage >> for USB VBUS comparator input >> i do not see it saying supplies any voltage to the circuit anywhere in >> the PDF. >> I can see the software causing the issue if there is some kind of noise >> in the line. >> maybe instead of a hard ground which would cause headaches if one was to >> plug a usb power connector to the BBB >> a pulldown of 10k on the line to keep it low. >> One would need to test this idea out. >> >> Gerald might have a comment ? >> >> >> >> On 7/20/2015 12:41 AM, Maxim Podbereznyy 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 <[email protected]>: >> >>> >>> >>> Sent from my Windows Phone >>> ------------------------------ >>> From: William Hermans <[email protected]> >>> Sent: 7/19/2015 11:11 AM >>> To: [email protected] >>> 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 <[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 >>> >>> == >>> -- >>> 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 [email protected]. >>> 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 [email protected]. >>> 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 [email protected]. >>> 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 the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> 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 [email protected]. >> 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 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 > [email protected]. > 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. 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