Yes, I will go run the USB-Power test. I guess my question is... are you are powering your BBB from the USB port on a computer, or, are you powering your BBB via the USB port from something like a power supply or cellphone charger, which does not have a computer and USB driver in it.
If you are powering the BBB from a computer, and that computer has the BBB driver on it, that allows you to see the BBB's internal web site, etc, then, even though you are not using it, when you plug it in, the driver comes up and starts polling the BBB at 1000 times per second, to see what is going on. A lot is happening at the lower levels of USB that take time to service on the BBB. --- Graham == On Sun, Jul 19, 2015 at 11:14 AM, William Hermans <yyrk...@gmail.com> wrote: > *Or, are you just powering it via the USB connector and not using/engaging >> the USB subsystem in the BBB?* > > > Not sure if g_multi or g_ether is setup on this image. In either case, I'm > only using ethernet. I'll look though. *looks* > > *Looks like the answer is "no".* >> >> *debian@beaglebone:~$ lsmod* >> *Module Size Used by* >> *snd_soc_evm 5854 0* >> *omap_rng 5140 0* >> *rng_core 8755 1 omap_rng* >> *snd_soc_davinci_mcasp 18528 2* >> *snd_soc_edma 1166 1 snd_soc_davinci_mcasp* >> *snd_soc_hdmi_codec 2514 1* >> *uio_pdrv_genirq 3657 0* >> *uio 9930 1 uio_pdrv_genirq* >> > > Anyway, I can understand that you may not want to use USB to power the > device. However as a test to see if vbus / vusb is floating . . . this can > not really hurt to power via USB for a little while during tests. > > Once it is established that this problem is related or not, then you and > others can act accordingly. Grounding the necessary lines, or not. > > This really makes sense to me though, at least from my own perspective. > Since I'm not having the problems you all are having with the same kernels. > Passed that, if it does not pan out. Well, a little wasted time, but well > worth the effort considering this problem seems to plague several people. > Easy enough to test anyway . . . > > On Sun, Jul 19, 2015 at 9:00 AM, Graham Haddock <gra...@flexradio.com> > wrote: > >> My advice to Erik is that, if he has something important to do, to go >> back to an official release. He should use a "Beta" release only if he can >> afford the additional problems it might bring, and in this case there are >> some. In my application for the BBB, I do not use or want to use the USB >> connector. The previous kernels worked fine with the +5V power. Although >> the +5V versus USB power behavior could be an important clue to what the >> problem is. >> >> == >> >> When you say "powered by USB" are you also running the USB g_multi >> interface to a PC and engaging the driver in the PC? >> >> Or, are you just powering it via the USB connector and not using/engaging >> the USB subsystem in the BBB? >> >> I think there are (at least) two variables here. >> >> I will go power my BBB via the USB connector, which will power the Vusb >> line, but without any USB activity on the USB connector and see what >> happens. >> >> I agree that systemd is not the likely problem, since kernel 3.14 uses >> systemd, and works fine, USB or +5V connector. >> >> My personal observation is that the less the BBB is doing, the more >> likely the self-reboot is to happen. >> If I turn off the four blinking blue LEDs, with the BBB not doing >> anything else, the reboots seem to happen more often. >> So, if you are powering the USB connector from a computer, it may be the >> USB activity, not the power source that is changing the behavior. >> >> --- Graham >> >> == >> >> >> >> On Sun, Jul 19, 2015 at 10:11 AM, William Hermans <yyrk...@gmail.com> >> wrote: >> >>> 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 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. >> > > -- > 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. 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