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Posted on: June 29, 2020 07:57 PM

Posted by: Renato

Categories: linux ubuntu

Views: 4022

- UBUNTU 20.04

- rtl8821CU

- lsusb

- Bus 001 Device 004: ID 0bda:c811 Realtek Semiconductor Corp. 

The good news is that your 0bda:c811 device has support and has been the subject of several answers and duplicates here before; for example: USB WIFI Realtek not an MTP device The bad news is that the previous driver files will not properly compile on Ubuntu 20.04 using a 5.0.0-xx kernel version.

I recommend that you use another method. With a temporary working internet connection, open a terminal and do:

```

sudo apt update
sudo apt install build-essential git dkms
git clone https://github.com/brektrou/rtl8821CU.git
cd rtl8821CU
chmod +x dkms-install.sh
sudo ./dkms-install.sh

```

It builds successfully, albeit with a few possibly harmless warnings, on my 5.0.0-23 system

Next, do:

`sudo modprobe 8821cu`

Your wireless should now be working.

Renato

Developer

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