[Step 1] Ubuntu: Install Vino Server
Install the Vino server:
sudo apt install vino
[Step 2] Ubuntu: Eenable Screen Sharing
As instructed in this page, go to
Screen Sharing and check the option
Allow connections to control the screen as well as
Require a password if desired (recommended).
[Step 3] Ubuntu: Disable Encryption
Run the following to disable encryption so that your Mac can connect via VNC without an compatibility issue.
sudo gsettings set org.gnome.Vino require-encryption false
[Step 4] Ubuntu: Start Vino Server
Then, you can run the remote desktop sharing server (Vino server):
[Step 5] Mac: Connect via VNC
Space keys to open the Spotlight search bar and type the following to connect to your Ubuntu machine: