WiFi isn't working in new installation of Ubuntu

Question

It's Linux and everything should be setup manually, but I'm new to this and need help in setting up my WiFi.

here's what I did. I installed ubuntu, tried to connect the WiFi while installation it didn't got connected, I thought well it'll connect once it got installed but it still isn't connected. I think it should be pretty easy to solve, something I forgot to tick or something

a thing to notice is that it says it's connecting for few seconds and doesn't get connected after that

Solution

All you need to do is Open a terminal by pressing Ctrl + Alt + T and run:

gksu gedit /etc/NetworkManager/NetworkManager.conf

At the bottom of this file, copy and paste the following:

[device]
wifi.scan-rand-mac-address=no

final result will look like this

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=false

[device]
wifi.scan-rand-mac-address=no

Then just save and close the file and run:

sudo service network-manager restart

And wifi should work again!

Comments

[Yoginee Pingale]

what's your output of cat /etc/NetworkManager/NetworkManager.conf

[Sumeet Deshmukh]

@user535733 what? No

[Sundar Labhar]

@user535733 works fine on Windows, hardware is working, let me try the answer

[PЯINCƎ]

For those who are still looking for some solution, I searched for several days, the solution is therefore to update the kernel to 5.10 or 5.12 example, I had 5.8 on 20.04.2 LTS with a dual boot, neither wireless or bluetooth worked, I upgraded the kernel to 5.12 via askubuntu.com/a/1291835/855698 and it works now. I hope it will help those who will have this trouble.