Mesa 7I92TM goes offline shortly after starting LinuxCNC

Its not likely a cable issue, it's most likely a host Ethernet setup issue:
No static IP setup on the Ethernet port connected to the 7I92TM.

(The init light indicates the expected watchdog error you will get if
communications with LinuxCNC are lost)

Ok, the top shows ip a when it's dead, the bottom when it's alive
 

But I do have a question about configuration, In network config when I select Routes and check "use this connection only for resources on its network" I then lose my Gateway (it goes to blank and I can't enter one).  If I un-check the box I can then re-enter the gateway.

Which is correct?

Thank you,
 

EDIT: I think I see the problem, forgot to set Method to Manual.


Here's a rundown of the network config
 

 

 


 

Like tommylight said, it looks like you have two configurations
setup for your single Ethernet device, there should only be one
setup with static ip address, no gateway,no DNS servers no search
domains and ipv6 disabled.

All you normal network connections should go through your WIFI
wlp2s0

You need to select "Manual" rather than Automatic on the IPV4 page

FIXED!!

Thank you so much for your help,