On Saturday, November 1, 2014 3:24:33 PM UTC-4, david turvene wrote: > > The system runs fine when I'm not messing around with the plugs, changing > the wifi properties, or sniffing. When I do any of these the system > occasionally silently reboots - I've been able to test up to 20 sniffing > sessions before it reboots, sometimes it will reboot immediately when I > start an monitor session. > * I run the BBB headless, generally using SSH xterm. > * The silent reboot happens with NO indication. NOTHING. The uart > console just shows a system restart. > * I triggered a watchdog NMI (it takes 22 seconds) and it showed a lot of > diagnostic info - so that's not it. >
Further research - similar behavior was reported last year. Lot's of red herrings (USB control appeared to be the most suspicious because that's my main interface but also long threads blaming the power management unit.) Someone found that another clock source was needed for low-power state and moved the new code into u-boot. I was running with a local build from RCN's git repo described at: https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-Bootloader:U-Boot and 2014.7 baseline. I noticed it is now at 2014.10 so I rebuilt and installed on target. The system is much more stable after testing for a lot longer than I could before. And I'm pretty sure the clocking/power is the root cause of the silent reboots so I'm checking how the clock change, to the RTC32K clock, works. Also, since I'm running from emmc, I used am335x_boneblack_defconfig to build u-boot. The only difference is it sets EMMC_BOOT but a quick grep shows it changes logic in a couple places. Anyway, it's a start... -- 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.
