How to Install Dolphin Emulator in Ubuntu 20.04 – Step-by-step

Installing

2. 2. Setting Up Flatpak

   How to Install Flatpak on Ubuntu 20.04

   Flatpak Ubuntu Setup Guide

   How to Install Flatpak on Ubuntu 20.04 GNU/Linux.

   To check if it’s already there use:

   which flatpak

3. 3. Installing Dolphin Emulator

   Then to Install Dolphin Emulator Flatpak App on Ubuntu 20.04
   To Setup the Repo play:

   flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

   For further Insight see the Flatpak Official Documentation.
   And after:

   flatpak install https://dl.flathub.org/repo/appstream/org.DolphinEmu.dolphin-emu.flatpakref

   The Flatpak App Setup do Not need the sudo Command because then it Runs confined into a Sandbox.
   However you’ll be Prompted to Authenticate with your’s User or Admin Pass.
   Then Confirm the proposed Setup with ‘Enter’ and Wait patiently until the App is Downloaded, Build and Installed.

4. 4. Launching Dolphin Emulator

   Finally, Launch & Enjoy Dolphin Emulator
   Use the Desktop Launcher:

   
   Of from Shell with:

   flatpak run org.DolphinEmu.dolphin-emu