hope it works for you in your version of lenovo laptop
Dave
Solution for the Issue
sudo service network-manager stop
sudo rmmod acer_wmi
sudo modprobe acer_wmi
sudo rfkill unblock all
sudo service network-manager start
After this step the status message in the Network Manager will be “Wireless is disabled”
Now Enable wireless from the Network Manager using the following commands
sudo rmmod -f acer_wmi
Wireless networks will be detected and connected.
To make this change permanent use
sudo su
echo "blacklist acer_wmi" >> /etc/modprobe.d/blacklist.conf
exit
thanks to david john for the solution
