Finally had a day to install Debian with updated u-boot and 3.13.1 kernel (custom compiled from https://github.com/beagleboard/kernel.git), no issues so far.
Thank you, Vladimir http://pastebin.com/wwriLcm3 On Monday, February 3, 2014 2:12:04 PM UTC-5, AndrewTaneGlen wrote: > > Try with a different software package, e.g. > http://elinux.org/BeagleBoardUbuntu (I'd highly recommend using this over > Angstrom in any case) If you have similar problems it might help point to a > HW issue. > > On Monday, 3 February 2014 08:04:23 UTC+13, Vladimir B wrote: >> >> Hi All, >> >> I am trying to rule out SW issues with my BBB (HW Rev A5C) running >> Angstrom. First I am going to give a bit of background on when the issues >> started and then provide dumps of crashed as seen via UART. >> >> >> >> 1. BBB was working fine for quite some time. >> 2. Then I tried to switch from wired ethernet to wireless by plugging >> in UWN200 ( >> http://www.logicsupply.com/components/networking/wireless/uwn200/) >> while BBB was powered by DC adapter. >> 3. My SSH over wired Ethernet froze. >> 4. I removed the UWN200 and rebooted a device but could not longer >> connect via SSH with wired ethernet >> 5. Connecting via USB (client) I could not get network connection >> to 192.168.7.2 either. As I realized later I did not even have usb0 >> listed >> when running ifconfig >> 6. At this point I connected via UART >> 7. I could see that the kernel was crashing with NULL pointer >> dereference Oops >> 8. Every few restarts it would get past this oops >> 9. I shutdown BBB and looked to upgrade to latest Angstrom a few days >> later, thinking maybe I am just a lucky one to hit a real bug in the >> kernel >> 10. I downloaded the following image >> >> https://s3.amazonaws.com/angstrom/demo/beaglebone/BBB-eMMC-flasher-2013.09.04.img.xzinto >> SD card >> 11. BBB was booted from SD by holding the boot button. >> 12. Flashing process was problematic, it took a few reboots (about) >> from SD card for eMMC flashing to complete (4 solid LEDs) without kernel >> Oopsing >> - One of the Oopses was odd as it was for "invalid instruction" >> >> >> To me this feels like a HW problem due to failures manifesting themselves >> in different ways. Segfaults in the apps, NULL pointer dereferences in the >> kernel, Soft CPU lockups. But I would like to rule out a user error. >> >> Few observations: >> >> - I have run mtest from uboot without any errors being detected >> - Same for memtester >> - Pressing rest button does not always reboot the device. Sometimes >> holding power button down is the only way to reboot the BBB. But >> sometimes >> it works just fine. >> - For a few reboots accessing BBB via HTTP would causes kernel >> Oopses. Trying it out just now and it worked just fine >> >> >> The below is done post flashing to the latest angstrom: >> >> - systemd once segfaulted during boot: http://pastebin.com/YFuxNs8e >> - some times system boots just fine: http://pastebin.com/7HynL8H7 >> - "opkg upgrade" consistently segfaults >> - "opkg install strace" consistently segfaults >> >> >> Any suggestions on what I can do to narrow down the root cause of the >> issue would be greatly appreciated. >> >> Thank you, >> >> Vladimir >> > -- 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/groups/opt_out.
