How to fix wifi card channel in Ubuntu 16.04 lts?

Question

ubuntu

Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
Chipset - Atheros
Driver - ath9k Oddly enough, everything worked great for her, I didn’t find much help in Google, as soon as I switched the channel, which did not help. Naturally, the interest is for educational purposes only.

Answer 1

airodump-ng mon0 --ignore-negative-one Isn't it?