As the title suggests, it is a memorandum for connecting and recognizing WI-UW-433DMS to ubuntu 20.04.
Recently, I bought a toy drone called TELLO and started playing. (Something may be raised soon.) This device can be operated with a smartphone, and then it can be controlled by a program from a personal computer. The connection will be in the form of connecting to the drone side because it is started up in Wi-Fi AP mode. That's why I needed a Wi-Fi client for my computer, so I bought BUFFALO's WI-U2-433DMS for the time being.
Even if I try to connect it without doing anything, it doesn't say yes or no. Well, I was prepared (laughs), but I searched for the driver's article while listening to google teacher. This doesn't work. After all, there are many articles on ubuntu 18.04, but I can't find the article on 20.04. Well, it hasn't been released yet, and it looks like this. So, as one of the successful examples as of the present time (October 26, 2020), I will leave it as a memorandum.
The Ubuntu version is as follows.
$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04.1 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 20.04.1 LTS"
VERSION_ID="20.04"
The chip used by this WI-UW-433DMS seems to be rtl8821au. The driver that I searched for with this chip name and succeeded was "aircrack-ng / rtl8812au". The title is rtl8812au, but it is also compatible with rtl8821au.
From github, clone as usual.
$ git clone https://github.com/aircrack-ng/rtl8812au.git
The rest is obediently as written in README.MD. First of all, you will need DKMS, so pick it up.
$ sudo apt-get install dkms
And in the cloned rtl8812au directory,
$ sudo make dkms_install
If you execute, this is the end. By the way, dkms is a tool to automatically rebuild the driver when the linux version is changed by the update. Originally, some settings are required, but the dkms_install script handles all of them. (Since I put this in, it took a linux kernel version upgrade once, but it worked fine.)
When uninstalling
$ sudo make dkms_remove
And here, the script is prepared properly. As usual, I restarted it and inserted the WI-U2-433DMS, and I was able to recognize it safely. This is a paragraph.
Well, not only ubuntu, but linux driver relations may change every day, so it's just a memo at the moment.