For what it is worth . . . debian@beaglebone:~$ uname -a Linux beaglebone 4.1.2-ti-r3 #1 SMP PREEMPT Tue Jul 14 06:54:47 UTC 2015 armv7l GNU/Linux debian@beaglebone:~$ cat /etc/dogtag BeagleBoard.org Debian Image 2015-03-01 debian@beaglebone:~$ uptime 19:46:56 up 6 days, 5:48, 1 user, load average: 0.00, 0.01, 0.05
Powered via USB, and running ever since I installed that kernel On Mon, Jul 20, 2015 at 9:40 AM, Graham Haddock <[email protected]> wrote: > 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. > 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. 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