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• v0.20.1 3721b6816d

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  v0.20.1 Stable

  enricobuehler released this 2026-07-27 19:04:53 +00:00 | 19 commits to main since this release

  Update whenever it suits you — the app and the machine you stream from can still be updated one at a time, and everything already paired keeps working. This release is entirely fixes and hardening on top of last release's session⇄game work — nothing new to opt into.

  Fixed: installing or updating the Windows host

  Three separate reports came in within hours of the last release, all blocking install:

  • winget install could fail outright if you'd ever had another streaming host on the machine — even one you had since disabled or mostly uninstalled. A leftover, disabled service or an empty folder from an old install was enough to trip the "conflicting host" check and abort. Only a host actually set to start on its own counts now.
  • Installing through a package-manager app (like UniGetUI) could fail with a file-path error before the install wizard ever appeared, because of a broken setting the installer passed itself. Fixed.
  • The package source instructions were incomplete. winget install unom.PunktfunkHost says "no package found" until you've pointed winget at Punktfunk's own source, once per machine — the command for that is now spelled out.

  Fixed: Moonlight compatibility no longer turns on without asking

  A fresh Windows install used to enable Moonlight-app compatibility silently, with no checkbox ever shown — even though that mode pairs over a less secure connection and the host warns about it on every start. It's opt-in now. Existing installs are untouched either way; Punktfunk's own clients were never affected.

  Fixed: switching into Steam's Game Mode on Linux could black out the machine

  Last release shipped the permission needed to properly take over the screen for Steam's Game Mode — and surfaced a few sharp edges that only show up once that takeover is actually live:

  • The takeover could kill Punktfunk's own background service a few seconds later, leaving the display dark with nothing left to bring it back except a physical console or SSH.
  • It could also hang waiting on a permission prompt nobody could see, delaying recovery until well after the stream had already dropped — or act on a leftover marker file from months ago and jump the machine to the desktop for no reason.
  • Restarting the host mid-stream — including a routine update — could leave the display stuck off, since nothing told the screen to come back.

  All three are fixed. Recognizing the machine's built-in Steam Game Mode may now need a one-time permission on some distributions; installing or updating normally takes care of it.

  Fixed: a laptop with its built-in screen turned off stuttered constantly

  On a laptop with two graphics chips and the internal screen switched off — a common setup for streaming from a laptop docked to a TV or monitor — streaming stuttered roughly every two seconds, for the whole session. Punktfunk now recognizes a dark-but-connected laptop screen as the cause and points at the actual fix, instead of pointing at an external monitor that isn't the problem.

  Fixed: latency creeping up over the course of a fast, high-bitrate stream

  On a fast local network, especially at higher bitrates, latency could climb steadily over a long session instead of staying flat. Several separate causes are fixed at once: the stream's internal clock sync could get starved by a busy connection and let the two ends' clocks drift; a stream mode could put more data on the wire than its bitrate setting actually allowed; a slow-to-decode moment could build up a backlog that took a while to work through instead of catching up immediately; and the one-time startup speed test could be mistaken for real network congestion and permanently cap the stream below what the connection could actually handle.

  Fixed: missing cover art looked broken

  A library entry with no cover art showed as an empty grey box, which read as something that failed to load. It now shows a controller icon instead, so "no art yet" looks intentional rather than broken.

  Improved: the Windows app now keeps its own log file

  The desktop app writes its own log to %LOCALAPPDATA%\punktfunk\logs\client.log now, instead of only printing to a console window that a normal launch never shows. If you're ever asked to send logs for a problem, this is where they are.

  Under the hood (for developers)

  • Nothing changed on the wire or at the API boundary. Streaming protocol stays at version 2, the embeddable C ABI at 13, the Windows virtual-display driver protocol at 6 — 0.18–0.20 hosts and clients keep mixing freely.
  • Windows conflict detection now keys on the competing service's Start registry value (0–2 = boot/system/auto only), matching the tray's own dormant-is-harmless logic from last release; install directories no longer count.
  • The winget Log switch used the literal string |LOGPATH| instead of winget's actual <LOGPATH> substitution token, so Inno received an illegal filename on any install that requested a log (UniGetUI does by default). Guarded by a new manifest check.
  • gamestream installer task lost its default-checked flag; a silent/unattended install now lands PUNKTFUNK_HOST_CMD=serve. /MERGETASKS=gamestream opts in. Fresh installs only — GamestreamParam already omitted the flag on upgrades.
  • The gamescope display-manager takeover now calls privileged systemctl verbs non-interactively (--no-ask-password) so a headless polkit prompt can no longer block the stream's own recovery thread; session_select_requested's sentinel baseline is now recorded at takeover time as well as at successful launch, closing a window where a months-old ~/.config/steamos-session-select write could false-positive a session-select honor; and punktfunk-host now handles SIGTERM/SIGINT by restoring the display manager it stopped (20 s grace) before exiting, so a systemctl --user restart or package upgrade mid-takeover can't strand the box. The takeover also now ensures the invoking user has systemd lingering enabled before touching the display manager — without it, stopping the DM stops the user's own service manager ~10 s later and takes the host down with it.
  • A new internal_panel target class lets the exclusive-topology stall detector name a deactivated eDP/LVDS laptop panel as a disturbance suspect; previously the suspect list was filtered to external physicals only, so the one display responsible on a hybrid laptop reported as none. EvtIddCxMonitorI2CTransmit/Receive now answer every DDC/CI probe against the virtual monitor with an immediate STATUS_NOT_SUPPORTED, so third-party brightness/monitor tools stop occupying win32k's serialized physical-monitor path on it. The swap-chain drain thread now falls back to TIME_CRITICAL priority if MMCSS registration is refused, and raises IddMinimumVersionRequired 4 → 10 to use IddCxSetRealtimeGPUPriority.
  • Clock re-sync now spaces its probe rounds ~7 ms apart, tracks a running best-RTT guard band instead of a static connect-time floor, and applies the best batch of a rejection streak after three consecutive rejections rather than drifting unbounded.
  • A new per-frame WireBudget (shared between encoder backends) tracks the real bitstream-to-wire inflation ratio for datagram-aligned PyroWave sessions and deflates the rate-control target by it, so the configured bitrate pin holds on the wire rather than on the raw codec bitstream.
  • The pre-decode frame channel now drains to the newest AU for all-intra (PyroWave) streams, since those have no reference chain forbidding a mid-stream drop — capping any standing backlog at roughly one frame instead of ratcheting between the coarse jump-to-live thresholds.
  • The ABR capacity probe's first post-probe report window is now discarded outright, rather than measured, so the probe's own deliberate overload can no longer read as session congestion and permanently end slow-start early.
  • New display-disturb dev tool for reproducing DDC/CI and modeset-class display disturbances on demand during stall-immunity testing; not shipped to end users.

  Downloads

  • Punktfunk-0.20.1.dmg
    7.7 MiB

    2026-07-27 19:58:11 +00:00
  • Punktfunk-0.20.1.ipa
    7.3 MiB

    2026-07-27 20:07:31 +00:00
  • punktfunk-0.20.1-1-x86-64.f43.raw
    52 MiB

    2026-07-27 20:03:08 +00:00
  • punktfunk-0.20.1-1-x86-64.f44.raw
    52 MiB

    2026-07-27 20:01:58 +00:00
  • punktfunk-0.20.1-1.fc43.x86_64.bazzite.rpm
    9.7 MiB

    2026-07-27 20:02:31 +00:00
  • punktfunk-0.20.1-1.fc44.x86_64.fedora-44.rpm
    9.8 MiB

    2026-07-27 20:01:12 +00:00
  • punktfunk-0.20.1.aab
    12 MiB

    2026-07-27 19:45:03 +00:00
  • punktfunk-0.20.1.apk
    19 MiB

    2026-07-27 19:45:32 +00:00
  • punktfunk-0.20.1.zip
    1.3 MiB

    2026-07-27 19:39:51 +00:00
  • punktfunk-client-0.20.1-1-x86_64.pkg.tar.zst
    14 MiB

    2026-07-27 19:40:27 +00:00
  • punktfunk-client-0.20.1-1.fc43.x86_64.bazzite.rpm
    12 MiB

    2026-07-27 20:02:35 +00:00
  • punktfunk-client-0.20.1-1.fc44.x86_64.fedora-44.rpm
    12 MiB

    2026-07-27 20:01:16 +00:00
  • punktfunk-client-0.20.1.flatpak
    12 MiB

    2026-07-27 23:36:49 +00:00
  • punktfunk-client-windows_0.20.1.0_arm64.cer
    768 B

    2026-07-27 19:39:32 +00:00
  • punktfunk-client-windows_0.20.1.0_arm64.msix
    43 MiB

    2026-07-27 19:39:32 +00:00
  • punktfunk-client-windows_0.20.1.0_x64.cer
    768 B

    2026-07-27 19:42:22 +00:00
  • punktfunk-client-windows_0.20.1.0_x64.msix
    69 MiB

    2026-07-27 19:42:22 +00:00
  • punktfunk-client_0.20.1_amd64.deb
    13 MiB

    2026-07-27 19:38:05 +00:00
  • punktfunk-client_0.20.1_arm64.deb
    13 MiB

    2026-07-27 19:45:28 +00:00
  • punktfunk-host-0.20.1-1-x86_64.pkg.tar.zst
    12 MiB

    2026-07-27 19:40:31 +00:00
  • punktfunk-host-setup-0.20.1.exe
    74 MiB

    2026-07-27 19:36:58 +00:00
  • punktfunk-host-windows_0.20.1.cer
    768 B

    2026-07-27 19:36:59 +00:00
  • punktfunk-host_0.20.1_amd64.deb
    21 MiB

    2026-07-27 19:37:36 +00:00
  • punktfunk-scripting-0.20.1-1-x86_64.pkg.tar.zst
    33 MiB

    2026-07-27 19:40:40 +00:00
  • punktfunk-scripting-0.20.1-1.fc43.x86_64.bazzite.rpm
    26 MiB

    2026-07-27 20:02:42 +00:00
  • punktfunk-scripting-0.20.1-1.fc44.x86_64.fedora-44.rpm
    26 MiB

    2026-07-27 20:01:24 +00:00
  • punktfunk-scripting_0.20.1_amd64.deb
    26 MiB

    2026-07-27 19:38:13 +00:00
  • punktfunk-web-0.20.1-1-x86_64.pkg.tar.zst
    37 MiB

    2026-07-27 19:40:50 +00:00
  • punktfunk-web-0.20.1-1.fc43.x86_64.bazzite.rpm
    30 MiB

    2026-07-27 20:02:52 +00:00
  • punktfunk-web-0.20.1-1.fc44.x86_64.fedora-44.rpm
    30 MiB

    2026-07-27 20:01:37 +00:00
  • punktfunk-web_0.20.1_amd64.deb
    30 MiB

    2026-07-27 19:38:26 +00:00
  • unom.PunktfunkHost.installer.yaml
    3.5 KiB

    2026-07-27 19:37:02 +00:00
  • unom.PunktfunkHost.locale.en-US.yaml
    3.8 KiB

    2026-07-27 19:37:03 +00:00
  • unom.PunktfunkHost.yaml
    496 B

    2026-07-27 19:37:04 +00:00
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