- "Automatic" gamepad type resolves to the virtual Steam Deck pad on Deck
hardware (env SteamDeck / DMI Jupiter|Galileo): the built-in 28DE:1205
identity is invisible at Hello time — the Valve HIDAPI drivers run
in-session only and Steam Input shadows the pad with its virtual X360 —
so auto always fell through to Xbox 360. "steamdeck" is now also
selectable in Settings.
- Chrome-less launches flatten the window CSS (border-radius/box-shadow)
and fullscreen at startup: gamescope never ACKs the xdg fullscreen
state, so adwaita kept the floating-CSD rounded corners + shadow
visible over the stream.
- Gaming-Mode --connect launches quit on session end, so Steam ends the
"game" and the Deck returns to Gaming Mode — previously the app popped
to its own hosts page, stranding the user fullscreen and making the
escape chord read as broken.
- The capture hint is controller-aware; the chromeless hint teaches the
hold-chord ("hold L1+R1+Start+Select to leave") and a quick chord press
re-flashes it.
- Colour bisect for the reported off-colours on the VAAPI dmabuf path:
graphics offload defaults OFF under gamescope (a subsurface hands the
NV12 CSC to the compositor), PUNKTFUNK_OFFLOAD=1|0 overrides, and each
colour-signaling change logs whether GDK accepted the BT.709-narrow
color state (fallback = GDK's BT.601 dmabuf default).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehler
e9c1f4083a