I am new to Ubuntu. I tried installing Ubuntu 20.04 on my Lenovo L420 laptop, WiFi is not enabled. I checked WiFi adapter it is already enabled. Even Bluetooth is working.
After I installed Ubuntu 20.04 airplane mode is automatically enabled. Then I am not able to disable airplane mode.
I used this command to disable airplane mode sudo rfkill unblock all.
I checked in additional drivers list it is showing No additional drivers available.
I am new here please help me to solve this issue.
Note: In this same laptop I installed same
Ubuntu 20.04that time WiFi was working.

rfkill listreturn? – mchid Feb 27 '22 at 07:44rfkill listshows this one https://ibb.co/0KYm48V – Ramesh S Feb 27 '22 at 11:36wi-fitoggle switch. – Ramesh S Feb 28 '22 at 06:45lsmod | grep padreturn? Also, it's better to just paste the output into a reply or add it to the question as opposed to a screenshot. – mchid Feb 28 '22 at 14:58ideapad_laptopplease refer to this answer – mchid Feb 28 '22 at 15:01lsmod | grep padreturns this https://ibb.co/7J0jHyz – Ramesh S Mar 04 '22 at 13:46