Enable Wi-Fi hotspot in Ubuntu 20.04

System information

System: Ubuntu 20.04.4 LTS
Device: Archer T2U Nano AC600 Nano Wireless USB Adapter
Desktop: xfce

Network interface controller (NIC) driver







# download and install driver
$ sudo apt-get install dkms
$ git clone -b v5.6.4.2 https://github.com/aircrack-ng/rtl8812au.git
$ cd rtl*
$ sudo make dkms_install
# show searched Wi-Fi
$ sudo nmcli device wifi list

Image Not Showing Possible Reasons

The image file may be corrupted
The server hosting the image is unavailable
The image path is incorrect
The image format is not supported

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Wi-Fi configuration

Open Network Connections
- GUI: Setting
  $\to$ Advanced Network Configuration
- Terminal
```
username@hostname:~$ nm-connection-editor
```
Press Ethernet
$\to$ Add a new connection
$\to$ select Wi-Fi
$\to$ Create
Image Not Showing Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
Learn More →
Image Not Showing Possible Reasons
- The image file may be corrupted
- The server hosting the image is unavailable
- The image path is incorrect
- The image format is not supported
Learn More →
Editing Wi-Fi connection
- Connection Name: Wi-Fi name (display on network connections)
- SSID: Wi-Fi name (display on available networks)
- Mode: Hotspot
- Band: Automatic
- Device: select available one (default is eth0)
- Cloned MAC address: Preserve
- MTU: automatic
  Image Not Showing Possible Reasons
  The image file may be corrupted
  The server hosting the image is unavailable
  The image path is incorrect
  The image format is not supported
  Learn More →
Wi-Fi Security (set up password)
- Security: WPA & WPA2 Personal (select available one)
- Password: your password
  Image Not Showing Possible Reasons
  The image file may be corrupted
  The server hosting the image is unavailable
  The image path is incorrect
  The image format is not supported
  Learn More →
IPv4 Setting
- Method: Shared to other computers
  Image Not Showing Possible Reasons
  The image file may be corrupted
  The server hosting the image is unavailable
  The image path is incorrect
  The image format is not supported
  Learn More →
Enable/Disable Wi-Fi hotspot


$ sudo nmcli connection up/down <SSID>

Other GUI software: Linux Wifi Hotspot


$ sudo add-apt-repository ppa:lakinduakash/lwh
$ sudo apt install linux-wifi-hotspot

Connect to Wi-Fi via adaptor












# check Wi-Fi device is enabled or not
$ nmcli radio wifi
# if Wi-Fi device isn't enabled
$ nmcli radio wifi on
# show Wi-Fi access points
$ nmcli device wifi list
# connect to Wi-Fi 
$ nmcli device wifi connect <Wi-Fi name> password <Wi-Fi password>
# connect to Wi-Fi (password won't store in your computer)
$ sudo nmcli --ask dev wifi connect network-ssid
# disconnect to Wi-Fi
$ nmcli con down <Wi-Fi name>

Reference

Ref: Archer T2U Nano AC600 Nano Wireless USB Adapter
Ref: RTL8812AU/21AU Wireless drivers
Ref: TP-Link AC600 Archer T2U Plus driver for Ubuntu 20.04
Ref: Turn on Wi-Fi hotspot using command line on Ubuntu 18.04
Ref: Linux Wifi Hotspot