Help debug my pine64A+ ubuntu/plex hangs
#2
(09-18-2017, 05:17 PM)XaRz Wrote: I'm trying to understand why my pine64+ keeps hanging after 3 days or so ... when it became unreacheable from the network and I suspect the board hangs. How can I debug the problem? 
Any hint would be great.

One simple thing you can do is to setup a heart-beat monitor ( blinking LED ) on the system LED pins ; directly next to the IR port.  Use the code below:

sysled_heartbeat.sh

Code:
#!/bin/sh

echo $1  > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio$1/direction

COUNTER=0
while [ $COUNTER -lt 10 ]; do
   echo 0 > /sys/class/gpio/gpio$1/value
   sleep .35
   echo 1 > /sys/class/gpio/gpio$1/value
   sleep .65
done

echo $1  > /sys/class/gpio/unexport


You can run this code as sudo with :

      sudo  ./sysled_heartbeat.sh  359

This assumes you have the system LED plugged in;  the ballast resistor is built-in;  use a 3mm low power LED ( white is nice )

The idea is simple,  if the board hangs the light will stop blinking.  The blinking light requires the OS to be functional to provide the ON|OFF sleep cycles.

I suspect your board is NOT hanging ( the light will prove that ).  More likely your network connection has dropped for some reason... is this a wifi connection ?  If so, sometimes in idle states the wifi will shutdown to conserve power and the connection will drop.  Sometimes the eth connection will do the same;  one way to put a stop to this temporarily while you're getting a handle on the problem is to setup a script that wakes up once every few minutes to send three pings to your router ( use crontab ). Another thing you can do is to send part ( or all ) of your dmesg log to another machine using scp every so many minutes ( say thirty ). 

If your OS is hanging something is really wrong ( probably corrupted SD card ).  My PineA64+ boards ( both of them ) run 24-7-365 ... I rarely reboot them and they have both been running for several months now.  I have heart-beat monitors on all my boards, and I have a function monitor on my main server.
marcushh777    Cool

please join us for a chat @  irc.pine64.xyz:6667   or ssl  irc.pine64.xyz:6697

( I regret that I am not able to respond to personal messages;  let's meet on irc! )


Messages In This Thread
RE: Help debug my pine64A+ ubuntu/plex hangs - by MarkHaysHarris777 - 09-18-2017, 05:47 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Issues with both Deb and Ubuntu germanshep 0 1,948 08-28-2018, 05:47 PM
Last Post: germanshep
  Plex Home Theater? jpenberthy 0 1,853 03-07-2017, 02:15 PM
Last Post: jpenberthy
  Ubuntu 16.04 cannot resolve dns - connection timed out; no servers could be reached marcosti 2 8,887 03-01-2017, 02:46 PM
Last Post: dkryder
Question Ultrawide Display for Ubuntu Mate DE dudeytsang 1 4,075 01-01-2017, 07:26 AM
Last Post: CaptainZalo
  Pine64+Ubuntu+Tvheadend+DVBT Dongle Shai 3 4,925 10-03-2016, 04:23 AM
Last Post: Shai
  Dmesg output Ubuntu Mate S265 1 2,785 10-02-2016, 07:28 AM
Last Post: MarkHaysHarris777
  Overclocking ubuntu mate Mixermic 2 3,789 10-01-2016, 04:36 AM
Last Post: pfeerick
  How to make multicast working on ubuntu and debian brengthdom 3 5,589 09-18-2016, 02:05 PM
Last Post: brengthdom
  Camera support - Ubuntu Xenial 16.04 LTS @lex 3 3,672 08-07-2016, 03:47 AM
Last Post: romansavrulin
  [How-To] Make PINE 64 with Ubuntu Xenial Longsleep build crunch BOINC Tasks moisesmcardona 3 6,478 07-27-2016, 01:16 PM
Last Post: NexusDude

Forum Jump:


Users browsing this thread: 1 Guest(s)