Thanks Chris

Yep I have plenty out there too with no issues. It also happened on a Qotom box 
so not hardware related.

Regards
Michael Knill

From: AstLinux List <astlinux-users@lists.sourceforge.net>
Reply to: AstLinux List <astlinux-users@lists.sourceforge.net>
Date: Wednesday, 16 September 2020 at 8:53 am
To: AstLinux List <astlinux-users@lists.sourceforge.net>
Cc: The Cadillac Kid <eldorado...@yahoo.com>
Subject: Re: [Astlinux-users] APU2 keeps locking up

for whatever its worth..  from a hardware standpoint I have probably 200 APU2s 
in the field and dont have then just freeze like that..  granted they arent 
running astlinux, but just mentioning it from a power / hardware point of view.

mine are all running Centos 6.X and asterisk 11 or 13

I have had a few chan_sip freezes.. (we wrote a watchdog to catch those and 
restart asterisk).. we get maybe 1 every 3 or 4 months .. (not each site but 
collectively)

I have kenrel panicked an APU before by upping and downing the ethernet port 
too much (or so it seems)..  it doesnt happen very often and is hard to repeat 
in the lab.  but have done it esp on an install..  where one is prone to plug 
and unplug cables multiple times in succession for dressing in..

I have had a few power bricks go bad.. in all cases there was just no output..  
no lights on the board at all. its not been that many 3 or 4..  considering we 
have sites in some pretty lightning-prone areas i dont feel too bad about a few 
power bricks.

we run UPSs on all of our sites

we run the US power supply that is sold on the PC-Engines store.



On Tuesday, September 15, 2020, 6:04:44 PM EDT, Michael Knill 
<michael.kn...@ipcsolutions.com.au> wrote:


Yep I would say environmental for 1, maybe 2 sites but for 3 sites and all only 
recently I cant see how it could be.
No serial or long ethernet cables are connected.
Yes completely different power adaptors when I changed from APU2 -> Qotom.
Yes they are all DSL however ALL different modems and service types.

I'm thinking I will upgrade all Runnix versions at these sites and if still 
happening upgrade to 1.3.10 and if still happening then I have no idea what to 
do.

Regards
Michael Knill

On 16/9/20, 7:36 am, "Lonnie Abelbeck" 
<li...@lonnie.abelbeck.com<mailto:li...@lonnie.abelbeck.com>> wrote:

    So a UPS may solve the issue as with Site 1 ?


    Do you have any serial cables connected ?

    Any long ethernet cables connected ?

    Is this with a variety of power adapters ?  ie. the APU2 -> Qotom switch 
did the power adapter change as well ?

    Sure sounds environmental to me.

    I've seen DC-to-DC UPSs for about $40 USD, but never tried one.
    https://protectli.com/product/uninterruptible-power-supply/

    Lonnie




    > On Sep 15, 2020, at 3:58 PM, Michael Knill 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
    >
    > Ok I'm reviving this thread as I have now had my third site with this 
issue.
    >
    > Symptom:
    > Astlinux completely locks up and requires a power reset. The log shows 
NOTHING in all cases.
    >
    > Troubleshooting conducted:
    > Site 1 - The problem has not occurred since both a UPS AND Power Filter 
have been added
    > Site 2 - A power filter has been added and the problem has reoccurred. I 
have completely changed the system from an APU2 to Qotom and it did the same 
thing again
    > Site 3 - A known working APU2 was installed and it locked up yesterday.
    >
    > I have checked mSATA cards and they were different across systems at 
these sites.
    > All systems are running 1.3.7.1 but I am running this at many other sites 
on the same hardware with no issues.
    >
    > Power quality testing is extremely expensive and surely I cant be having 
a power issue at 3 sites!
    > The whole thing just doesn't make any sense and I don't know where to go 
from here.
    > Any ideas?
    >
    > Regards
    > Michael Knill
    >
    > On 22/4/20, 9:24 pm, "Michael Knill" 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
    >
    >    Looks like this problem was bad power. I was told by the local IT Guy 
that there are regular brownouts so I installed a UPS. No more problems since 
doing so.
    >    Seems like APU's don't like low voltage scenarios.
    >
    >    Thanks for your help.
    >
    >    Regards
    >    Michael Knill
    >
    >    On 13/4/20, 1:05 pm, "Michael Knill" 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
    >
    >        Yes could be but very unusual. I have never had this problem with 
any other APU.
    >        Maybe I will look for a good surge suppressor.
    >
    >        Regards
    >        Michael Knill
    >
    >        On 13/4/20, 12:47 pm, "Lonnie Abelbeck" 
<li...@lonnie.abelbeck.com<mailto:li...@lonnie.abelbeck.com>> wrote:
    >
    >            Interesting, maybe bad power (spikes, noise, etc.)
    >
    >            Test with a UPS attached or good surge suppresser.
    >
    >            Lonnie
    >
    >
    >
    >> On Apr 12, 2020, at 9:17 PM, Michael Knill 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
    >>
    >> Hi Lonnie
    >>
    >> I have replaced the hardware already and it did EXACTLY the same thing ☹
    >>
    >> Regards
    >> Michael Knill
    >>
    >> On 13/4/20, 12:15 pm, "Lonnie Abelbeck" 
<li...@lonnie.abelbeck.com<mailto:li...@lonnie.abelbeck.com>> wrote:
    >>
    >>
    >>
    >>> On Apr 12, 2020, at 7:03 PM, Michael Knill 
<michael.kn...@ipcsolutions.com.au<mailto:michael.kn...@ipcsolutions.com.au>> 
wrote:
    >>>
    >>> May not have anything to do with Astlinux but I have a site which 
completely locks up e.g. cannot even communicate using serial port.
    >>> On reboot its fine but there is nothing in the logs but the bootup 
messages.
    >>> So far I have replaced the hardware with new storage as well and power 
supply and it is still doing it.
    >>>
    >>> It is currently running Astlinux 1.3.7.1 which has been running fine on 
another APU2 but its only been 8 days.
    >>>
    >>> Any ideas what I can do next?
    >>>
    >>> Regards
    >>> Michael Knill
    >>
    >>  Sounds like an APU2 hardware issue.
    >>
    >>  Maybe Pascal will give you a replacement.
    >>
    >>  Lonnie
    >>
    >>
    >>
    >>
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    >>
    >>
    >>
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