Skip to main content
FlexInfer docs

Steam Deck as the Game Hub (FlexInfer + Xbox One X)

The Steam Deck is the user-facing hub for both game sources. FlexInfer owns exactly one of them (the Sunshine/Moonlight path); the Xbox path is pure client-side configuration documented here so it lives somewhere findable. No Xbox protocol, account, or lifecycle handling belongs in FlexInfer.

SourcePathFlexInfer's role
FlexInfer 7900 XTX nodeMoonlight → SunshineLease, drain/restore, runtime, health (flexinfer game …)
Xbox One XXbox browser Remote Play (Edge)None — documented client recipe only
Xbox One XGreenlightNone — third-party fallback
FlexInfer node on the TVMoonlight UWP for XboxOptional, experimental

Keep both as Steam library shortcuts (a "Games" collection works well): one Moonlight entry, one Xbox Remote Play entry.

Shortcut 1 — FlexInfer games (Moonlight)

  1. Install Moonlight from Discover (Flatpak) in Desktop Mode and add it to Steam ("Add a Non-Steam Game").
  2. Start a lease: flexinfer game preflight cblevins-7900xtx, then flexinfer game start cblevins-7900xtx --for 2h --wait.
  3. Pair/connect Moonlight to the node (host 192.168.50.125; pairing persists in /home/flexinfer-gaming on the node across sessions).
  4. flexinfer game stop cblevins-7900xtx (or the TTL/idle expiry) returns the GPU to inference automatically.

Streaming settings that behave well here: HEVC, 8-bit (the card has no 10-bit HW encode entrypoint), ~50–60 Mbps. The full server-side runbook is docs/user/gaming-mode-runbook.md.

Shortcut 2 — Xbox One X Remote Play (browser path)

Xbox officially supports Remote Play from an Xbox One through a supported browser; Microsoft documents the Deck-specific Edge controller setup for Cloud Gaming, and the same recipe is reused here with the Remote Play URL — that combination needs an on-device test before trusting it for the couch.

  1. On the Xbox One X: Settings → Devices & connections → Remote features → enable; power mode Sleep/Instant-On; run the built-in remote play test. Prefer Ethernet.

  2. On the Deck (Desktop Mode): install Microsoft Edge from Discover.

  3. Grant Edge controller/device access with Microsoft's documented Flatpak override (Steam Deck Edge setup):

    flatpak --user override --filesystem=/run/udev:ro com.microsoft.Edge

  4. Add Edge to Steam and set launch options to open Remote Play in kiosk mode (append after the existing @@u @@ placeholder):

    --window-size=1024,640 --force-device-scale-factor=1.25 --device-scale-factor=1.25 --kiosk "https://www.xbox.com/remoteplay"

  5. Back in Gaming Mode: sign in once, then test video, audio, controls, suspend/resume, and reconnect.

  6. Fallback: if the browser path fails controller or codec-wise, install Greenlight (Flathub) — a maintained third-party Xbox Remote Play/xCloud client with Steam Deck support. Treat it as a fallback, not a dependency.

Do not plan around XBPlay for new installs — its Steam listing says it is no longer available for purchase.

Optional — Xbox as a living-room FlexInfer client

The community Moonlight UWP client (sideloaded in Dev Mode) can point the Xbox at the FlexInfer Sunshine host so the TV gets the stream without another device. It is early-stage software: fine as an experiment, inappropriate as the reason the gaming lease exists.

Steam Deck as the Game Hub (FlexInfer + Xbox One X) | FlexInfer docs