I would not power the board using the SYS_5V pins. That is the output of the PMIC. Not sure what issues that would cause. It also sounds like that the boot pins maybe are being affected in some way that prevents the boot cycle after a power failure or removal.
Gerald On Mon, Nov 23, 2015 at 11:35 AM, Lee Armstrong <[email protected]> wrote: > Anyone got any ideas, this is happening on a few units and nothing is > logged at all. > > Need to narrow down if it is software or hardware issue, from the Debian > side of things it just looks like the power was removed from the unit > however the NIC lights are still on and also the PWR light on the BBB. The > BBB is powered via the SYS_5V pins. > > > > On Friday, November 20, 2015 at 11:48:12 AM UTC, Lee Armstrong wrote: >> >> Also further to that the USR LEDs are all extinguished but the LED's on >> the NIC are ok and the power LED is still lit. >> >> >> >> On Friday, November 20, 2015 at 11:36:03 AM UTC, Lee Armstrong wrote: >>> >>> Hello, >>> >>> I have a very strange issue that I cannot seem to work out and get more >>> info for! >>> >>> We have a BBB Rev C that is powered via the 5V header pins. It also >>> uses UART2 heavily (3MBps) and this is configured using the built in >>> BB-UART2 device tree overlay. >>> >>> The board is running... >>> >>> BeagleBoard.org Debian Image 2015-10-04 >>> >>> 4.1.13-ti-r31 >>> >>> >>> What seems to happen is that the board drops off the network and also >>> the serial debug cable I have attached becomes unresponsive. Nothing had >>> been logged in the console at all on the serial cable and when it boots >>> back up there is nothing in any of the previous syslogs at all to give even >>> the hint of anything happening. >>> >>> >>> What is even more puzzling is that the network LED's continue to flash! >>> >>> >>> To get this back I have to pull power and it then unsurprisingly works >>> ok after that. >>> >>> >>> I'm trying to get to the bottom of this but if nothing is logged I don't >>> know where to go next! >>> >>> >>> Any ideas at all anyone? >>> >> -- > 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. > -- Gerald [email protected] http://beagleboard.org/ -- 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.
