This question already has an answer here:

How to disable bluetooth automatic turn on in Ubuntu 18.10

marked as duplicate by Scott Stensland, Melebius, karel, Seth Mar 15 at 6:32

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  • when you first time turnoff the bluetooth and shutdown, then turn on the system.. is it turning the bluetooth on at startup? – PRATAP Nov 24 '18 at 7:40
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    in my fresh install of Ubuntu 18.10, before shutting down, what is its state, i.e on or off.. after reboot it is in the same state when shutting down. – PRATAP Nov 24 '18 at 7:43
  • Bluetooth always turns on automatically when I power on my system, when I turn bluetooth off and reboot, my system has bluetooth turned on when I unlock. – Shameek Nov 24 '18 at 11:41
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    The question has been asked about previous Ubuntu versions, do none of those answers work? askubuntu.com/search?q=%5Bbluetooth%5Ddisable+start – Jeremy31 Nov 24 '18 at 12:41
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    Jeremy31 No those don't work, they are for older versions of ubuntu my versions doesn't have those files in those directories. – Shameek Nov 24 '18 at 18:38

This AskUbuntu answer was the one that do it for me.

It uses systemctl to turn off the bluetooth.service:

to deactivate bluetooth on startup issue this

sudo systemctl disable bluetooth.service
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    Just to add, you can reference and quote any answers you like in your answer but DO NOT post an answer that is just a link to another. Make it your own, use your own word and just quote the relevant part of the other answer. This "There is a solution in this post [LINK]", is not an acceptable answer. – Mr Shunz Mar 14 at 13:39

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