On ubuntu 16.04 LTS, etc/network/interfaces file used to be like this (not sure)
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
Than some time I had to use usb wi-fi adapter for long range etc, for that I changed interfaces to
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
#iface lo inet loopback
iface wlp3s0 inet manual
while returning to system's wifi card I toggle interfaces like
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
#iface lo inet loopback
iface wlp3s0 inet manual
It used to work fine, now when I turn back to system's wifi card, it don't even show Enable Wifi option
And this is result of ifconfig -a
without this line
iface wlp3s0 inet manual
usb wifi adapter used to not work, now even of I clear interfaces file, it still keep on working.
Let me know that did I messed up with interfaces or what is the issue here.
