Ubuntu
bluez package

  1. Bug #1728385
  2. Comment #17

Comment 17 for bug 1728385

Revision history for this message
Daniel Klafft (danklafft) wrote : Re: Failed to set mode: Blocked through rfkill (0x12)

I had the same issue on a Lenovo laptop. The command

 sudo rfkill unblock all

mentioned by @vanvugt solved the issue for me.

Linux 4.13.0-16-generic