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Natetronn
Asked: 2018-06-26 17:54:54 +0800 CST

Techkey Usb 3.0 Wifi Adapter - Issues installing Wifi Adapter

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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!

networking wireless drivers adapter realtek-wireless

1 Answers

  1. Best Answer

    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?

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