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Seemingly random lockups/hanging on reboot (NI RT Linux cDAQ 9134)

All,

We have several NI RT Linux systems (cDAQ 9134s) that are all exhibiting similar behavior - they intermittently lockup/hang when the reboot command is entered. For testing in the lab this is just a minor irritation, but for the units in the field it's a critical issue.

 

The logs don't show much of use (at least nothing I can find) but I did recently see this (see attached) on a unit with a monitor plugged in (not the usual case for us).

Perhaps of most note:

Stopping NI Service Locator: no /usr/local/natinst/bin/nisvcloc found: none killed

WARNING: Could not unload module nicsrk from memory

Failed to unload nipalk because it is being used!

 

I can't find much of anything on nicsrk or nipalk on the Internet. Any guidance/suggestions/ideas on how we can tackle this hang-on-reboot issue would be much appreciated.

Thanks.

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