You may also uncheck the box "Automatically connect to this network when it is avaiable" in nm-connection-editor. This only works if you have a saved wifi connection.
2. Set interface down
```
sudo ip link set wlan0 down
```
3. Set monitor mode
```
sudo iw dev wlan0 set type monitor
```
4. Set interface up
```
sudo ip link set wlan0 up
```
For setting TX power (v4.3.21 branch only):
```
sudo iwconfig wlan0 txpower 30
```
or
```
sudo iw wlan0 set txpower fixed 3000
```
For Ubuntu 17.04 add the following lines
```
[device]
wifi.scan-rand-mac-address=no
```
at the end of file /etc/NetworkManager/NetworkManager.conf and restart NetworkManager with the command:
```
sudo service NetworkManager restart
```
## Led Parameter
```
We've added the "realtek-leds.conf" in build directory,