No Wifi with Realtek RTL8723BE on Ubuntu 16.04

[Ralf Mardorf]

On Sun, 30 Jul 2017 15:14:48 +0200, philippe dalet wrote:
>On my computer, I have to compile the source with the new kernel.
>
>for rtl8188eu I use this script

So OP tried to compile the module for the used kernel, DKMS was already
running. The OP can't use your script that much likely will use dkms,
too, but to build another module.

However, regarding the link posted by the OP, there's no need to build
a kernel module.

The OP mentioned "a very weak signal".

So if running

echo "options rtl8723be ant_sel=2"  | sudo tee /etc/modprobe.d/rtl8723be.conf

and after that rebooting shouldn't work, perhaps running

echo "options rtl8723be ant_sel=1"  | sudo tee /etc/modprobe.d/rtl8723be.conf

and after that rebooting does solve the issue. The antenna related hint
from the link the OP posted sounds plausible, given that the OP experiences
"a very weak signal".

Regards,
Ralf