[xubuntu] Microphone not working on MacBookpro 15 (version 8.2) and Xubuntu 16.04

I have a Macbook pro 15 (version 8.2) with Xubuntu 14.04 the mic worked out of the box, with xubuntu 16.04
* upgraded from 14.04
* fresh install
The mic does'nt get any signal, i have tried these:
http://askubuntu.com/questions/48262...macbookpro10-2
with no luck.
the output of the command:
wget -O alsa-info.sh http://www.alsa-project.org/alsa-info.sh && chmod +x ./alsa-info.sh && ./alsa-info.sh
is here:
http://www.alsa-project.org/db/?f=1a...d8ec2ccacb994d
if please can anyone help me ?
not being able to use the microphone is killing me.
thank you !