When moving from one laptop to another some files and folders need to be copied over.
This document covers some best practices.
Sometime it's good to start afresh. Some dotfiles are managed/kept in this repo under dotfiles.
Copy over the following files/folders to migrate the Wifi passwords:
/etc/NetworkManager/system-connections/*.nmconnection— one entry per connection~/.local/share/kwalletd— where the secrets are kept in KDE (opens automatically on login)