The gamescope flatpak is now org.freedesktop.Platform.VulkanLayer.gamescope instead of com.valvesoftware.Steam.Utility.gamescope, so for gamescope to work with the flatpak at the moment, users are required to install the old version of the gamescope flatpak with:
flatpak install com.valvesoftware.Steam.Utility.gamescope
FYI, this gives a warning from flathub:
Info: (pinned) runtime com.valvesoftware.Steam.Utility.gamescope branch stable is end-of-life, with reason: The gamescope Flatpak has been migrated to org.freedesktop.Platform.VulkanLayer.gamescope.
It might be a good idea to migrate from com.valvesoftware.Steam.Utility.gamescope to org.freedesktop.Platform.VulkanLayer.gamescope
The gamescope flatpak is now org.freedesktop.Platform.VulkanLayer.gamescope instead of com.valvesoftware.Steam.Utility.gamescope, so for gamescope to work with the flatpak at the moment, users are required to install the old version of the gamescope flatpak with: flatpak install com.valvesoftware.Steam.Utility.gamescope FYI, this gives a warning from flathub:
Info: (pinned) runtime com.valvesoftware.Steam.Utility.gamescope branch stable is end-of-life, with reason: The gamescope Flatpak has been migrated to org.freedesktop.Platform.VulkanLayer.gamescope.
It might be a good idea to migrate from com.valvesoftware.Steam.Utility.gamescope to org.freedesktop.Platform.VulkanLayer.gamescope