wireless - Wifi and Ethernet Problem - Ask Ubuntu


i have 2 problems.

  1. i connect computer network using wi-fi when computer comes sleep message wi-fi network disconnected.
  2. network manager says "ethernet network() : device not managed" i've ubuntu 16.04 lts installed

i have had similar problems wifi. due interfaces file being manually configured since building own system basic install no desktop. because didn't unity desktop , didn't want go through hassle of un-installing , installing new desktop , not. once found desktop liked wifi wasn't being managed because system reading interfaces file configure network once removed manual configurations system started using network manager.

edit interfaces file typing: sudo nano /etc/network/interfaces

then either comment out manual configurations wifi. file looks this:

this file describes network interfaces available on system

and how activate them. more information, see interfaces(5).

the loopback network interface

auto lo iface lo inet loopback


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