Wifi device not showing in ubuntu OS and keeps on disconnecting frequently

Author - Navneet Kashyap

How to solve the problem when Wifi device is not showing in ubuntu OS and keeps on disconnecting frequently?

Solution: Follow below steps:-

Step.1 Run below command to update the OS resource list

sudo apt-get update

Step.2 Run below command to install default broadcom wifi drivers

sudo apt-get install bcmwl-kernel-source

Step.3 Create a script file in /etc

sudo nano /etc/pm/sleep.d/99_wififix
	#! /bin/sh
	case “$1” in 
			service network-manager stop
			rm /var/lib/NetworkManager/NetworkManager.state
			service network-manager start

Step.4 Now change permission of the above script

sudo chmod 755 /etc/pm/sleep.d/99_wififix

Step.5 Now finally reboot the system

sudo shutdown -r now
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