Your system information

• Steam client version (build number or date): Settings read: Steam 1702079146

% flatpak info com.valvesoftware.Steam 

Steam - Launcher for the Steam software distribution service

          ID: com.valvesoftware.Steam
         Ref: app/com.valvesoftware.Steam/x86_64/stable
        Arch: x86_64
      Branch: stable
     Version: 1.0.0.78
     License: LicenseRef-proprietary
      Origin: flathub
  Collection: org.flathub.Stable
Installation: user
   Installed: 37,1 MB
     Runtime: org.freedesktop.Platform/x86_64/23.08
         Sdk: org.freedesktop.Sdk/x86_64/23.08

      Commit: 75a2aa53fe4b99ae4c05f5af0fd0465fc2633513edb77b6406cbf930d3a7c6ed
      Parent: 4a9ec93b38c556e01ec2ead9a8c4c3150cdaa832666742e925b9942bcc9d0d7b
     Subject: Update gamemode (3806ac98)
        Date: 2023-12-14 20:21:16 +0000

• Distribution (e.g. Ubuntu): archlinux
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes
• Steam Logs: [generate by running this command in a terminal tar -zcvf ~/Desktop/steam-logs.tar.gz ~/.steam/steam/logs] -- really not confident about that item
• GPU: AMDGPU

Please describe your issue in as much detail as possible:

• When starting Steam in a Xorg session (startx where .xinitrc contains flatpak run --log-system-bus com.valvesoftware.Steam), the "Power menu" of Big Picture mode contains the "Quit Steam" item (press main button on the controller, bottom "Power" item of the menu that opens on the left).
• When starting Stean within gamescope (gamescope --xwayland-count 2 --steam --adaptive-sync -W 3840 -H 2160 -r 120 --force-windows-fullscreen -- flatpak run com.valvesoftware.Steam), the "Power menu" of Big Picture mode doesn't contain the "Quit Steam" item, but instead has "Return to desktop", which doesn't make sense and doesn't work (popup says "Returning to Desktop", and stays/hangs). Steam can't be quit.

Steps for reproducing this issue:

1. Launch steam in a standalone fashion (no DM, WM to speak of, etc.)
2. Open the power menu

Xorg setup

% cat ~/.zshrc
case "$(tty)" in
  /dev/tty0) exec startx ;;
esac
...

% cat ~/.xinitrc
exec flatpak run com.valvesoftware.Steam

This works! :+1:

gamescope config

% cat ~/.zshrc
case "$(tty)" in
  /dev/tty0) exec gamescope --xwayland-count 2 --steam --adaptive-sync -W 3840 -H 2160 -r 120 --force-windows-fullscreen -- flatpak run com.valvesoftware.Steam ;;
esac
...

This last picture stays. Steam is stuck :disappointed: