linuxcnc frequent freeze

Seems to be getting worse...

Sounds like some hardware is failing,

Does dmesg show any hardware faults (disk errors etc?)

So this am I switched to another pc optiplex 9020...used same SSD...Got same error...
Ran smartctl...disc passed....just did fsck -f -y....got 4% noncontiguous as result

dmesg gave nothing in red

Just went to run dmesg again....after it finished...stretched terminal window...went blank...opened new terminal fullof read only errors??

By read only errors did you mean "error finishing read" errors
(which indicate network latency issues)

PCW wrote:

(which indicate network latency issues)
 

This indicate break connection, not latency issues.

RLA wrote:

Just went to run dmesg again....after it finished...stretched terminal window...went blank...opened new terminal fullof read only errors??

SSD's will do that when they are failing.
Did you try booting from usb?