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Full Discussion: Linux froze and got back working 5 days later, no reboot.
Top Forums UNIX for Beginners Questions & Answers Linux froze and got back working 5 days later, no reboot. Post 303036587 by jim mcnamara on Wednesday 3rd of July 2019 10:36:18 PM
Old 07-03-2019
In other Solaris 10 boxes I had similar problems when a device went wrong. Once it was a connector, another time it was a NIC (network card).
Syslog had no obvious entries about hanging up or any kind of disconnect. We were worried because the boxes in question were in the DMZ.

I have no real, proper method for diagnosing this. Someone else here may.

The best I can offer: Consider replacing the modem. What is the power source for the Pi card? the modem? Are the power connections meant for exterior deployment?
This User Gave Thanks to jim mcnamara For This Post:
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LEARN ABOUT MINIX

reboot

REBOOT(8)						      System Manager's Manual							 REBOOT(8)

NAME

       reboot - reboot the system immediately

SYNOPSIS

       reboot [-f]

DESCRIPTION

       Reboot  can  be	used  to  reboot  the  system  after  installing a new kernel.	It does not inform the users, but does log it's actions in
       /usr/adm/wtmp and /usr/adm/authlog.  The system is then rebooted with the reboot(2) systemcall.

       If the -f flag is not given then all processes are sent terminate signals to give them a chance to die peacefully before the reboot() call.

       If the wtmp file exists, reboot logs itself as if it were a shutdown.  This is done to prevent last(1) from talking  about  system-crashes.
       Reboot is registered as is in the authlog file.

       Reboot can only be executed by the super-user.  Any other caller will be refused, either by reboot(8) or by reboot(2).

SEE ALSO

       reboot(2), shutdown(8), halt(8), boot(8).

BUGS

       The  error message's given by reboot are not always useful.  There are several routines that can fail, but which are not fatal for the pro-
       gram.

AUTHOR

       Edvard Tuinder (v892231@si.hhs.NL)

																	 REBOOT(8)
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