If I understand correctly, your wireless lan has a block in place?
If you can, what is the output of this command, "rfkill list".. I assume it says their is a soft block or hard block in place? and the command "rfkill unblock all" doesn't fix your issue?
Also make sure (on some notebooks) that the physical toggle key is not the culprit, i.e. (Function Key + Wireless), or some other physical toggle key.
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