Two reasons both Sunshine apps streamed a blank screen. Steam is an X client, and sway starts Xwayland lazily. DISPLAY therefore did not exist at the moment the config imported the environment for Sunshine, so Steam came up with "Unable to open a connection to X" and rendered nothing. `xwayland force` starts it at compositor launch instead, and DISPLAY joins the import. The Desktop app was not broken at all — the desktop was genuinely empty. swaybg was painting #101920 on an output with no windows and no bar, which over a stream is indistinguishable from a failed capture. There are now keybinds for a terminal and a launcher, and kitty starts with the session so a working capture looks obviously working. Verified: Xwayland on :0, DISPLAY exported, xdpyinfo and zenity connect, and Steam Big Picture Mode renders as a window on HEADLESS-1.
36 lines
1.6 KiB
Plaintext
36 lines
1.6 KiB
Plaintext
# A compositor that exists only so Sunshine has something to capture.
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# mainframe has no desktop: the only connected output (HDMI-A-2) hangs off the
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# Intel iGPU, while the RTX 3060 that does the encoding drives no monitor at
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# all. Capturing the real output would mean grabbing on Intel and encoding on
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# NVIDIA — a cross-GPU copy every frame. A virtual output on the 3060 keeps
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# capture and NVENC on one card.
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output HEADLESS-1 mode 1920x1080@60Hz position 0,0
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output HEADLESS-1 background #101920 solid_color
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# Start Xwayland eagerly rather than on first X client. Steam is an X app, and
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# with the default lazy start DISPLAY does not exist yet when the line below
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# imports the environment — so Steam launched by Sunshine got
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# "Unable to open a connection to X" and showed a blank stream.
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xwayland force
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# Sunshine is a systemd user unit and inherits nothing from this session, so
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# hand it the display variables before starting it.
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exec systemctl --user import-environment WAYLAND_DISPLAY DISPLAY XDG_CURRENT_DESKTOP
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exec systemctl --user start sunshine.service
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# Input arrives from the Moonlight client, so keybinds are worth having even
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# though nobody is sitting at this machine. Without them the Desktop app
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# streams an empty screen with no way to open anything.
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set $mod Mod4
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bindsym $mod+Return exec kitty
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bindsym $mod+d exec wofi --show drun
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bindsym $mod+Shift+q kill
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bindsym $mod+Shift+e exec swaymsg exit
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# Something visible on login, so a working capture is obviously working rather
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# than indistinguishable from a broken one.
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exec kitty
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# No bar, no idle daemon, no lock screen — there is no one sitting here.
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