intenta con esto:
systemctl stop  apparmor.service
systemctl stop systemd-resolved.service
sudo airmon-ng check kill
sudo systemctl stop apparmor.service
sudo systemctl stop systemd-resolved.service
sudo systemctl stop isc-dhcp-server6.service
sudo systemctl stop isc-dhcp-server.service
sudo systemctl stop avahi-daemon.service
sudo systemctl stop networkd-dispatcher.service  
sudo systemctl stop networking.service
sudo systemctl stop NetworkManager-dispatcher.service
sudo systemctl stop NetworkManager-wait-online.service
sudo systemctl stop NetworkManager.service
sudo systemctl stop avahi-daemon.socket