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docs: user-facing docs revamp — structured product docs + per-platform setup
Replace the dev/agent-log pages with a proper user-facing doc set:

- Getting Started: Introduction (rewritten), How It Works, Quick Start.
- Host Setup: Requirements, then clean per-platform guides — Ubuntu GNOME,
  Ubuntu KDE, Fedora KDE (new), Bazzite (rewritten) — plus Running as a Service
  (desktop / headless GNOME / headless KDE).
- Connecting: Clients overview, Moonlight, Pairing & Trust.
- Configuration: host.env reference, Host CLI, Troubleshooting.
- The dev/design notes (architecture, roadmap, the deferred design specs, CI)
  move to a clearly-separated "Project & Internals" nav section.

Removes the superseded box-specific pages (gnome-box, headless-box, linux-setup,
overview). status.md (the internal progress tracker, with box IPs) is kept as a
file but dropped from the public nav. Site builds clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-12 14:01:19 +00:00

3.0 KiB

title, description
title description
Configuration The host.env settings — compositor, resolution, bitrate, input — and how to tune them.

The host reads its settings from ~/.config/punktfunk/host.env (a simple KEY=value file). Your setup guide gives you a starting host.env for your desktop; this page is the reference.

Session settings

These tell the host which desktop session to attach to. Your setup guide sets them for you.

Setting What it does
WAYLAND_DISPLAY The Wayland socket of your session (wayland-0 for a normal desktop).
XDG_CURRENT_DESKTOP Your desktop (GNOME, KDE).
XDG_RUNTIME_DIR, DBUS_SESSION_BUS_ADDRESS Needed when the host runs outside your interactive session (e.g. as a service).

Core settings

Setting Values Meaning
PUNKTFUNK_COMPOSITOR mutter · kwin · gamescope · wlroots Which backend creates the virtual display. Match your desktop.
PUNKTFUNK_VIDEO_SOURCE virtual · portal virtual creates a per-client display at its exact mode (the normal choice). portal captures an existing monitor instead.
PUNKTFUNK_ZEROCOPY 1 · 0 GPU zero-copy capture→encode. Leave on; it falls back to a CPU path automatically.
PUNKTFUNK_INPUT_BACKEND libei · gamescope · wlr · uinput How input is injected. libei for GNOME/KDE, gamescope for Bazzite.

Resolution and refresh rate

You don't set these on the host — the client chooses them. When a device connects, the host creates a virtual display at that device's resolution and refresh rate. A 1080p60 laptop and a 1440p120 desktop each get their own. (With Moonlight, set the mode in Moonlight's settings; with the Apple app, it uses the device's display.)

Bitrate

The client requests a bitrate; the host encodes to it. To find a good value for your link:

  • Apple app: use the built-in speed test (a host card's menu → Test Network Speed). It measures your link and suggests a bitrate, then applies it.
  • Moonlight: set the bitrate in Moonlight's settings. Start moderate and raise it.

Multiple devices at once

A host can stream to several clients simultaneously — each gets its own virtual display at its own resolution. This is the natural way to put your desktop on a laptop and a TV at the same time (both see and control the same desktop).

The number of simultaneous streams is bounded by your GPU's encoder. Cap it with --max-concurrent N on the host command line (default 4); extra clients wait until a slot frees.

Codec and FEC

  • The host encodes HEVC (H.265) by default; AV1 is available for clients that support it.
  • The native protocol adds forward error correction for lossy links. PUNKTFUNK_FEC_PCT=N sets the redundancy percentage (the default is sensible for a normal LAN).

Diagnostics

  • PUNKTFUNK_PERF=1 logs per-stage timing (capture, encode, send) — handy when tuning latency.
  • RUST_LOG=info (or debug) controls log verbosity.