I have been using Ubuntu for a very long time. I still love it. I won’t go into all the reasons why, but suffice it to say that I know what I’m doing with new installs.
I recently got a new work laptop and installed several operating systems on it, including Ubuntu 18.10. I like the interim releases because they have the latest tools and I’m still used to the developer model of living closer to the edge.
After the install, I was surprised to see that the wireless networking was not working. It appeared that the Network Manager couldn’t see the wifi adapter, but that wasn’t it. When I ran the suite of iwconfig tools, I could see the adapter and could even connect to my router. Woot! That meant that I was close to getting things resolved.
But, what was causing the original problem? In /etc/network/interfaces, there were two clauses for my wireless adapter as well as a bridge. I’m not sure what wrote those there, but you can’t have manual interface definitions there and expect Network Manager to work right.
The solution is:
- Edit: /etc/network/interface
- Clear everything and leave only:
auto lo
iface lo inet loopback
- Then, restart (or you can just restart networking).