This tutorial how to fix realtek RTL8723BE weak wifi signal or no wifi connection on Ubuntu or Linuxmint. A few days ago i just make new ubuntu installation on amd laptop and i found this problem,
realtek RTL8723BE wifi drivers doesn't work. same case i had before when i make new linuxmint 17.3 ( rosa ) installation. in short these gave idea to write this, it might help other ubuntu user who has same problem.
There are two ways to install
realtek RTL8723BE wifi drivers, both online or offline.