Christopher
in order to bring you as much info as I can, I did the following tests and the 
result is very strange!!

after installing new kernel 4.7, RJ45 connected
I rebooted a firt time (on 4.7)
took RJ45 out
no wifi

I connected RJ45 to install Chromium
rebooted a 2nd time, RJ45 out, no wifi

I rebooted a 3rd time, RJ45 out, wifi was visible (see the picture below)
http://i68.tinypic.com/29479ly.png

I did not connect to my wifi box (no wifi password declaration)
rebooted
no wifi again

I shut-off / shut-on power supply
wifi is back
I've been connected to it (see picture below)
http://i64.tinypic.com/fuumat.png

I shut-off / shut-on power supply again to check a 2nd time
NO wifi

I reboot
NO wifi, same

Finally, as usual, when I do a major change (reinstall, but no improvement this 
time) or upstream kernel, I've got Wifi just ONCE which means my card is 
recognized by Ubuntu, but never again.
Looks like a sort of flag is marked somewhere which no longer allows wifi

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https://bugs.launchpad.net/bugs/1565106

Title:
  Wifi works on W10 but not on Ub 16.04 nor 14.04

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