Why can't find WiFi network in Linux Mint?

Question

linux

Initial data:
- laptop MacBook Pro early 2015 13".
- Linux Mint 20 Cinnamon is installed as the second system.

The essence of the problem:
MacOS sees my routers, connects. When you boot into Linux Mint, specifically my routers are not in the list of wireless networks. Moreover, when installing in In Live CD mode, I successfully connected to one of the networks, after installation it disappeared.It looks as if the networks that I connected to in MacOS are added to some sort of ignore in Linux.For the ASUS RT-N12 VP router, the problem was solved by setting a specific value radio channel instead of auto

What could be the problem in Linux?

Answer 1

Is there a wifiX interface in the system? Can you show
the output ?ip -a

Answer 2

It was. I changed the channel on the router less than 11th. Something to do with regional standards
or try
sudo iw reg set RU