i work in a company that have a lot of sites,
every site have a number of computers - jetson xavier / Nano
we have a problem that almost in all of the sites computers crash and doesn’t auto reboot, i can’t find a systematic reason for the crash’ what more there are computer the doesn’t power up after i reset the system main electricity and need personal touch- i need to manually plug them in and out from the power.
the the only thing the always alike in the sys. is the the switch - we are using hikviosn simple POE Switch, but not all the devices crash and not every time
does anyone have any idea what to do

Not sure your precise problem.
Do you want us to find out why the devices are crashed? Or something else?

Step one is to understand what crash the devices

בתאריך יום ו׳, 23 באפר׳ 2021, 7:38, מאת WayneWWW via NVIDIA Developer Forums ‏<>:

Please use the serial console to dump the log when error happens.

If you don’t have a serial console running and logging on one of the units when it fails it’ll be very difficult to say anything. However, one thing you can do for some tiny bit of information:

sudo -s
# This should be at /sys/kernel/pmc/tegra_reset_reason
cat `find /sys -name 'tegra_reset_reason'`