[sudo] password di brk: 
lo        no wireless extensions.

enp2s0    no wireless extensions.

wlx0018e7688a3d  IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          
brk@brk:~$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

brk@brk:~$ sudo rfkill list
0: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no

brk@brk:~$ cat /etc/apt/sources.list && ls /etc/apt/sources.list.d/ 
deb cdrom:[Ubuntu 16.10 _Yakkety Yak_ - Release i386 (20161012.2)]/ yakkety main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://it.archive.ubuntu.com/ubuntu/ zesty main restricted
# deb-src http://it.archive.ubuntu.com/ubuntu/ yakkety main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://it.archive.ubuntu.com/ubuntu/ zesty-updates main restricted
# deb-src http://it.archive.ubuntu.com/ubuntu/ yakkety-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://it.archive.ubuntu.com/ubuntu/ zesty universe
# deb-src http://it.archive.ubuntu.com/ubuntu/ yakkety universe
deb http://it.archive.ubuntu.com/ubuntu/ zesty-updates universe
# deb-src http://it.archive.ubuntu.com/ubuntu/ yakkety-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://it.archive.ubuntu.com/ubuntu/ zesty multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ yakkety multiverse
deb http://it.archive.ubuntu.com/ubuntu/ zesty-updates multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ yakkety-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://it.archive.ubuntu.com/ubuntu/ zesty-backports main restricted universe multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ yakkety-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu yakkety partner
# deb-src http://archive.canonical.com/ubuntu yakkety partner

deb http://security.ubuntu.com/ubuntu zesty-security main restricted
# deb-src http://security.ubuntu.com/ubuntu yakkety-security main restricted
deb http://security.ubuntu.com/ubuntu zesty-security universe
# deb-src http://security.ubuntu.com/ubuntu yakkety-security universe
deb http://security.ubuntu.com/ubuntu zesty-security multiverse
# deb-src http://security.ubuntu.com/ubuntu yakkety-security multiverse