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I just picked up a Techkey Usb 3.0 Wifi Adapter off Amazon and have a difficult time figuring out how to install it.

I'm running Ubuntu 16.04 LTS.

The device came with a CD. I tried running the install.sh script but, it was trying to run something from ./driver folder and was giving off an error, as there is nothing actually in the driver folder. The CD had a linux directory with the following folders:

RTL8811CU（RTL8821CU）_WiFi_linux_v5.2.5.3_24795_COEX20170310-1212.20171031
RTL8812BU（RTL8822BU_WiFi_linux_v5.2.4.4_25643.20171212_COEX20171012-5044

➜  ~ lsusb                     

Bus 001 Device 003: ID 0bda:b812 Realtek Semiconductor Corp. 

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 002: ID 046d:c521 Logitech, Inc. Cordless Mouse Receiver

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub



➜  ~ uname -r                                            

4.13.0-45-generic

Any help would be greatly appreciated, thanks!

Update (2/15/2019):

The adapter was running sporadically slow at times.

I posted over at the Ubuntu Forums and it was recommend that I remove this driver and install a different one, suggested by Chili:

Remove the current driver: sudo dkms remove 8822bu/1.1 --all

Run each of the following commands one by one:

sudo apt-get update

sudo apt-get install build-essential git

git clone https://github.com/cilynx/rtl88x2BU_WiFi_linux_v5.2.4.4_25643.20171212_COEX20171012-5044.git

cd rtl88x2BU_WiFi_linux_v5.2.4.4_25643.20171212_COEX20171012-5044

VER=$(cat ./version)

sudo rsync -rvhP ./ /usr/src/rtl88x2bu-${VER}

sudo dkms add -m rtl88x2bu -v ${VER}

sudo dkms build -m rtl88x2bu -v ${VER}

sudo dkms install -m rtl88x2bu -v ${VER}

sudo modprobe 88x2bu

Consider a restart at this point to be sure it's working.

Source: https://ubuntuforums.org/showthread.php?t=2394372&p=13776566#post13776566

It's working but, I'll need more time to know if it is more stable. I'll update again soon.

I was able to get it working thanks to this:

https://forum.peppermintos.com/index.php/topic,6813.msg68924.html#msg68924

Okay, it looks like you require the 8822bu driver (which contains the
IDvendor:IDproduct string for your adapter .. 0bda:b812)

With an active internet connection, open a terminal and run these
commands in sequence:-

sudo apt-get install git dkms

then

mkdir ~/rtl8822

then

cd ~/rtl8822

then

git clone https://github.com/jeremyb31/rtl8822bu.git

then

sudo dkms add ./rtl8822bu

then

sudo dkms install 8822bu/1.1

then

sudo modprobe 8822bu

did wireless spring to life ?

If so, does it survive a reboot ?

Wireless sprung to life and it survived reboot. I only wonder if it will survive kernel updates as well?