Like the title says I am trying to understand how these things should work together. Part of my issue is I don’t have a good mental model on the Flatpak permissioning / sandbox model. My use case is running a game on Lutris, which is a Flatpack, and using my package install of Mangohud. I am also curious if I should using a Flatpak version of Mangohud instead of the package installed version, and understanding how I would set up Steam as a Flatpak in the future when I switch away from the packaged version.

Thanks for any helpful tips or links you can provide.

  • million@lemmy.worldOPEnglish
    1·
    2 months ago

    Here is my understanding of this now I’ve got everything working on my Flatpak install of Steam:

    MangoHud

    • Mangohud is installed as another Flatpak, org.freedesktop.Platform.VulkanLayer.MangoHud. There are multiple versions and you need the one that matches the Steam runtime that you can see by running flatpak list --app --columns=application,runtime | grep -i "steam"
    • To tell a game to use MangoHud you add MANGOHUD=1 %command% to the Steam launch options of the game
    • Alternatively you can use like Flatseal to add the environment variable MANGOHUD=1 to the Steam FlatPak to get this working in every game by default

    Gamemode

    • You need to install the Gamemode daemon, gamemoded as a system package
    • Once that is installed you can add gamemoderun %command% to the launch options to run the game with Gamemode enabled

    Edit: You actually DO need to install Mangohud and you need to match the Steam runtime version.