Problem with Airmon-ng Monitor Mode kali Linux Issue

[m-imran79]

Hello all,

I am new to learning Kali Linux and facing a small issue. I hope someone can guide me what I am doing wrong. I am using Kali 2017.03 Virtual Box Version, and Wifi Adaptor is ALFA AWUS036ACH. When I run following command I get a warning to run some another command first. I run this command and then re-run the original command, but it gives the same error. :

root@kali:~# airmon-ng start wlan0

PHY Interface Driver Chipset

phy0 wlan0 8812au Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac WLAN Adapter cat: /sys/class/ieee80211/phy0/device/net/wlan0mon/type: No such file or directory

Newly created monitor mode interface wlan0mon is NOT in monitor mode. Removing non-monitor wlan0mon interface...

WARNING: unable to start monitor mode, please run "airmon-ng check kill" root@kali:~# airmon-ng check kill

root@kali:~# airmon-ng start wlan0

PHY Interface Driver Chipset

phy0 wlan0 8812au Realtek Semiconductor Corp. RTL8812AU 802.11a/b/g/n/ac WLAN Adapter cat: /sys/class/ieee80211/phy0/device/net/wlan0mon/type: No such file or directory

Newly created monitor mode interface wlan0mon is NOT in monitor mode. Removing non-monitor wlan0mon interface...

WARNING: unable to start monitor mode, please run "airmon-ng check kill"

[kimocoder]

driver lack virtual Interface support, do it manually with:

ifconfig wlan0 down iwconfig wlan0 mode monitor

[m-imran79]

Thank you for the reply and suggested commands. I am using which you suggested, but I like to know why airmon-ng command does not work.

Secondly, as soon when I run airmon-ng, it disconnects the Wifi and ethernet connection. It shows all devices are connected but the internet does not work. I then have no option but to restart Kali and then Wifi & Ether net work.

[ghost]

The fix for your problem m-imran79 is that you have to restart the network manager using the following command: service network-manager restart

[3tern47]

hello everyone,

anyone help me please

i bought a alfa ac1900 wifi adapter in past November it worked fine up-to February later it giving troubles now from below

when i try airmon-ng it gives error like this

`Newly created monitor mode interface wlan0mon is NOT in monitor mode. Removing non-monitor wlan0mon interface... Segmentation fault

WARNING: unable to start monitor mode, please run "airmon-ng check kill"`

and later i tried ifconfig wlan0 down iwconfig wlan0 mode monitor

and i am getting this error root@kali:~# iwconfig wlan0 mode monitor Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Operation not permitted.

[Ludrique]

hi i am facing the same problem, when i do it manually it disconnects my wif and when i restart the network manager it goes back to managed mode

[Snownamida]

hello everyone,

anyone help me please

i bought a alfa ac1900 wifi adapter in past November it worked fine up-to February later it giving troubles now from below

when i try airmon-ng it gives error like this

`Newly created monitor mode interface wlan0mon is NOT in monitor mode. Removing non-monitor wlan0mon interface... Segmentation fault

WARNING: unable to start monitor mode, please run "airmon-ng check kill"`

and later i tried ifconfig wlan0 down iwconfig wlan0 mode monitor

and i am getting this error root@kali:~# iwconfig wlan0 mode monitor Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Operation not permitted.

Hello, I'm facing the same problem too. Have you got the solution?

[acheong08]

Same prob

[acheong08]

Must be an unsupported driver