Fix the “No Wi-Fi Adapter Found” Error on Ubuntu 20.04

Spent many hours and trying to find the solution for my wifi problem. Solution below fixed my wifi problem, but bluetooth is still not working.

https://askubuntu.com/questions/1401173/wireless-network-not-showing-with-iwlwifi-card

Contributor heynnema wrote:

"Your immediate problem is that you're running with the latest 20.04 kernel 5.13.0-39-generic, and you don't have the proper iwlwifi-so*.ucode firmware files for your wifi card, and the backport-iwlwifi-dkms that you tried to install won't work with your current kernel."

 

Fix the “No Wi-Fi Adapter Found” Error on Ubuntu 20.04

I Downloaded 2 files from the links below :

https://packages.ubuntu.com/impish/all/backport-iwlwifi-dkms/download 

https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/snapshot/linux-firmware-20220310.tar.gz

1. linux-firmware-20220310.tar.gz

2. backport-iwlwifi-dkms_9340-0ubuntu4_all.deb

 

cd Downloads/
sudo dpkg -i *.deb
tar -xvzf linux-firmware-20220310.tar.gz
cd linux-firmware-20220310
sudo cp iwlwifi-so* /lib/firmware

Restart the computer now!