Debian Stretch on the Thinkpad T420

As part of the Debian Everywhere, last Thursday installed Debian (Stretch) on the T420, replacing Linux Mint 18.
The install went (as usual) smooth as hell, of course there is no WiFi until you install, via non-free repos, the firmware-iwlwifi package.
Ths particular WiFi card it is a bit spotty out of the box, so it needs a tweak on the /etc/modprobe.d/iwlwifi.conf file, used exactly the same snippet I was already using on LM 18 and it worked perfectly.
As usual, the plain vanilla encrypted LVM and everyhing is peachy.
The only "problem" I found so far was disabling Bluetooth (don't use it at all), so far I haven't been able to disable it automagically. Besides don't using it, I hate the damn LED being turned on all the time.