AWUS036ACH in monitor mode in Linux

Last Modified: Thu, 18 Jun 2020 04:10:09 +0000 ; Created: Thu, 18 Jun 2020 04:10:09 +0000

Tried this Alfa card in Ubuntu 20.04 (latest updates) but had the hardest time getting it to work in monitor mode. I run Ubuntu under a VMware Workstation VM with the USB passed to the VM. Attempting to use airmon-ng start wlx000000000000 would result in my kernel crashing. I found a resolution with the following method:

These commands worked for me:

# All as root of course

apt-get purge -y rtl8812au-dkms

cd /root/

git clone

cd rtl8812au/

apt install dkms


# Important to do a reboot

# replace wlx000000000000 with your cards interface name

airmon-ng check kill
ip link set wlx000000000000 down
iw dev wlx000000000000 set type monitor
ip link set wlx000000000000 up
iw wlx000000000000 info