Wifi missing in Ubuntu 18.04?

Question

ubuntu

Does not see wifi on the main page and in the menu. That is, I can not connect to it at all. Rebooted NetworkManager
How to solve?

Answer 1

Switch to a normal OS, where kernel modules are not deprecated after an update, for example. Did you understand the hint? If not, rollback to an older kernel.

Answer 2

Run in Terminal:

sudo sed -i -e '6,8d' -e 's/networkd/NetworkManager/' /etc/netplan/01-netcfg.yaml; sudo netplan apply; reboot