Mesa 7i96s a little jitter

Check the menus, see if there is a "startup applications", you can put anything you want running at boot time, granted it does not require sudo privileges.
With sudo it is more complicated, not sure how to do that now as a lot has changed in Linux lately, but i used rc.local for that back in the days.
And, yes you can set the network using the etc/network file even if you used the network manager.
The other way around causes issues if not done correctly.

Thanks for the reply Tommy. Theres a session and startup with application autostart - what do I need to add there? I edited the network interfaces file with this # source /etc/network/interfaces.d/*
And this
hardware-irq-coalesce-rx-usecs 0
now everytime I restart I get an additional connection icon at the top right of the screen! They all have the same name and all show active when I connect the mesa. Any ideas?? I knew I’d get in trouble here - sigh…

Does it work?
That with icons multiplying like rabbits has been reported here before, but i have no idea how to go about it. Try searching for it, please.

Yeah it still works - il figure the multiple network manager applet opening later. I tried adding the static ip etc from the other tutorial and that rendered things dead so am back to where I started but with the improved ping response. Attached scope is of things now - some large spikes which is disappointing… any thoughts?
thanks

After reading some more I’m wondering if I should have or whether I do have the dpll timer enabled. Could this explain the spikes I’m seeing in the dpll phase error?

The big spikes are expected (those are from host latency)

To get an idea how bad they really are, you need to set the scale much larger
(say 200 per div or 0.2 ms per division)