I don’t know how to restart the jupyter server. Restart of the system didn’t fix my problem. My PYNQ System works, except it can’t start my jupyter server anymore. I am connected to my Ultra96-V2 Board logged in over the SerialPort. I did: hostname -I hostname ps aux | grep jupyter systemctl…

Looks like this is a conflict between various versions of Jupyter/Tornado/pyzmq. There’s a thread over on the Jupyter GitHub page. My best guess as to what’s happened is that something’s been updated and now there’s some inconsistency. pyzmq seems to be the prime suspect so you could try sudo pip3…

Jupyter server failed to start

Support

PeterOgden June 16, 2020, 8:42am 2

There might be more logging information if you run

journalctl -u jupyter.service

Also if you run

sudo -i
jupyter notebook

Do any error messages get printed?

Peter

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Jupyter server failed to start

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