Upgraded to Ubuntu 14.04 LTS, can't use Internet anymore, what do?
18433
How do I fix DNS resolving which doesn't work after upgrading to Ubuntu 13.10 (Saucy)
67958
Ubuntu 16.04 wifi not connecting
79892
How to set up Ubuntu as wireless accesspoint?
33651
How to upgrade from Ubuntu 12.10 to 14.04
55211
Problem when upgrading to Ubuntu 14.04 from Ubuntu 12.04
26819
Wifi not working in Ubuntu 14.04.3
22700
How to enable Wifi connection in Ubuntu 14.04 LTS
1055
Wifi doesn't work after suspend after 16.04 upgrade
18175
How to enable wireless on Ubuntu Server 18.04 via CLI?
124278
wifi doesn't work on ubuntu
120348
Can't reach wi-fi signal on Ubuntu, but can do it on other OS/devices (ath9k)
16703
No DNS resolution after upgrade from ubuntu 14.04 to 16.04
103261
No Wifi connection on Ubuntu 16.04
91207
Chrome is unable to connect to the Internet
114595
Ubuntu hangs after replugging the modem
52657
Removed network-manager and now stuck
404
Last upgrade crashes network manager (no internet connection, no applet)