While this seems like a bug, I’m not sure if it is or not. Installing a fresh 25.10 the SSH option in System doesn’t turn on SSH right out of the box. Might be worth adding to an ansible playbook or other initial set up script.
Link to Jeff Geerling’s post below but it’s really down to just installing openssh-server. After that the option slider should work.
sudo apt install openssh-server -y
Updated and Retried on 25.10 11/20/25
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