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> 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> 
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> 
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> 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> wrote:
            > 
            > 
            > 
            >> On Apr 12, 2020, at 7:03 PM, Michael Knill 
<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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            > 
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to pay...@krisk.org.



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