no wifi adapter found ubuntu 20.04 hp code example

Example 1: no wifi adapter found ubuntu 20.04

rfkill list
#if hard blocked option is yes
lspci -v
#at the Network controller you will find your wifi adapter name

#search on google and download the iwllwifi corresponding at the network controller

#exemple for intel i go to https://www.intel.com/content/www/us/en/support/articles/000005511/wireless.html

#And download iwlwifi-xxxx.tgz

#After unzip and go to the directory with the terminal and copie iwlwifi file in /lib/firmware
cp iwlwifi-xxx /lib/firmware

#After reboot
reboot

Example 2: fix no wifi adapter found ubuntu 20.04

#for Ubuntu 20.04
sudo apt install linux-generic-hwe-20.04

Example 3: no wifi adapter found ubuntu 18.04

sudo apt install linux-generic-hwe-18.04

Example 4: wifi adapter not found ubuntu 20.04

sudo apt install --reinstall bcmwl-kernel-source

Example 5: ubuntu 20.04 wifi adapter not found dell

SOLUTION

sudo apt-get purge bcmwl-kernel-source

sudo apt-get install broadcom-sta-source broadcom-sta-dkms broadcom-sta-common

reboot