No Wi-Fi Adapter Found

[S. Naveen Mathew Nathan]

I was able to see Wi-Fi networks before installing nvidia driver and blacklisting nouveau. I also performed an upgrade. I'm not sure how these steps are related to Wi-Fi.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: broadcom-sta-source (not installed)
ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
NonfreeKernelModules: wl nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Jan 20 15:42:47 2019
InstallationDate: Installed on 2019-01-20 (0 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: broadcom-sta
UpgradeStatus: No upgrade log present (probably fresh install)