How are you powering the BBB ? It almost sounds as if you're powering by USB, and the BBB is not getting enough power at boot time. Although I do boot the couple I have ( one REV A one REV C ) with ethernet plugged in and active. In fact I load the rootfs via ethernet . . .
However, with that said, with the 3.8.x kernel, I'd expect that you'd get a kernel ooops when hotplugging the device. So maybe that part of USB hotplugging has been corrected with the 3.8.47* kernel ? How much power does the fadecandy pull ? On Thu, Mar 12, 2015 at 11:58 AM, Brandon Stafford <[email protected]> wrote: > Hi all, > > I have a Rev C Beaglebone Black that I am trying to use with a Fadecandy > device (https://www.adafruit.com/products/1689). When I plug the > Fadecandy into the BBB, it is not recognized. No entries appear in dmesg. > This is odd, because the same Fadecandy board is works fine with my laptop, > before and after being plugged into the BBB. > > The really weird part is that if reboot the BBB with the Fadecandy plugged > in, the PMIC appears to shutdown just after the login prompt appears on the > console interface. All the LEDs on the BBB turn off, and the current drops > to zero. If I reboot the BBB *with nothing attached*, the same thing > happens again-- I reach the login prompt and then all the lights go out. > (If I detach the debug cable, I can't be sure that I'm actually reaching > the login prompt, but the LEDs do still go out after roughly the right > amount of time.) > > Eventually, if I reboot the BBB enough times, it recovers. After that it > appears to run fine for days. > > Anyone have any ideas about what's going wrong? Anyone else have a > Fadecandy working with a BBB? > > Brandon > > -- > Brandon Stafford > Rascal Micro: small computers for art and science > Somerville, MA, USA > > -- > 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.
