Raspberry Pi 2 Wi-Fi Problem

Hi,

I'm really confused with the situation that I have. So, what we have:

• Raspberry Pi 2 Model B
• Kernel: 4.14.78-v7+ GNU/Linux (installed from kali-linux-2018.4-rpi0w-nexmon.img.xz)
• Wi-Fi adapter: Alfa AWUS036NHA
• apt-get update & apt-get upgrade finished
• apt-get install firmware-atheros finished

lsusb outputs the following:

Bus 001 Device 004: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n

iw dev outputs the following:

nl80211 not found.

iwconfig outputs the following:

eth0 no wireless extensions.
lo no wireless extensions.



dmesg has the following lines:

[ 2.602175] usb 1-1.2: new high-speed USB device number 4 using dwc_otg
[ 2.762996] usb 1-1.2: New USB device found, idVendor=0cf3, idProduct=9271
[ 2.778065] usb 1-1.2: New USB device strings: Mfr=16, Product=32, SerialNumber=48
[ 2.793669] usb 1-1.2: Product: UB91C
[ 2.805281] usb 1-1.2: Manufacturer: ATHEROS
[ 2.817419] usb 1-1.2: SerialNumber: 12345

Can you please help to identify the problem that i have? I understand that there's something wrong with the nl80211 driver but I see a lot of other people who have succeeded with the same configuration. What can I do with this nl80211 driver?
Thanks in advance.

That adapter works fine on the RPi with the RPi2/3 image from the download page.

Why did you use the RPi0w image? There is an image for RPi2/3 already made. Btw, current kernel is 4.14.80-kali-v7