marfrit 93d7c5c67a KWIN_PIVOT: Phase-4 done (qt6 patches landed) + weston A/B vindicates KWin theory
Today's deltas:
- qt6-base-fourier built, installed, validated on ohm. Static-idle
  journal shows zero GL_INVALID_VALUE post-relogin; the Qt 6
  GL_ALPHA bug is genuinely fixed.
- chrome v4 under KWin still stalls — at ~6s vs ~3s pre-Qt-fix, so
  the GL_ALPHA churn was contributing some load but wasn't the
  primary cause.
- Clean A/B with weston: same chrome v4 binary, same panfrost,
  same V4L2, same hardware → swapping KWin → weston turns the
  stall off entirely. Chrome plays through with elevated CPU
  (~96 % vs KWin's ~50 % when it isn't stalled) because weston
  falls back to LINEAR composite vs KWin's fast-tile path.
- mpv triangulation:
    --vo=null --hwdec=v4l2request: clean (decode only)
    --vo=drm --hwdec=v4l2request: 0.7 % drops in 19 s (KMS scanout)
    --vo=gpu-next --hwdec=v4l2request under KWin: 76 % drops, slideshow

Decode + display hardware path is fully capable. The wall is
specifically KWin's compositor scheduling/presentation pipeline on
this stack — panfrost ES 3.2 + V4L2 stateless NV12 dmabuf clients.

KWIN_PIVOT.md rewritten:
- Phase 4 (qt6 patch, ship, upstream) marked done.
- New Phase 5 (find the KWin culprit): WAYLAND_DEBUG on chrome +
  KWin to capture the missing wl_buffer.release / wp_presentation
  exchange around the 6 s stall, plus strace-on-kwin and
  effects-disable bisection.
- New Phase 6 (fix and ship): kwin-fourier package pattern, ohm
  validation, bugs.kde.org filing.
2026-04-28 15:35:01 +00:00

marfrit-packages

Overlay package repository for the reauktion.de infrastructure.

Published at: https://packages.reauktion.de/

Scope

Tree Arches Notes
Arch Linux ARM (ALARM) aarch64 primary target — Pi 5, Rock 5, ampere, KU-1255 test rigs
Arch Linux x86_64 for nuccies / workstations
Debian arm64, amd64 for non-Arch hosts

MIPS is intentionally unsupported. The Fritz!Box is sacred.

Layout (served at packages.reauktion.de)

packages.reauktion.de/
├── arch/
│   ├── aarch64/{marfrit.db,marfrit.files,*.pkg.tar.{xz,zst}{,.sig}}
│   └── x86_64/...
├── debian/
│   ├── dists/
│   │   ├── bookworm/{Release,InRelease,Release.gpg,main/binary-{arm64,amd64}/...}
│   │   └── trixie/...
│   └── pool/main/...
└── marfrit.gpg      # public signing key

Adding the repo (Arch / ALARM)

curl -sO https://packages.reauktion.de/marfrit.gpg
sudo pacman-key --add marfrit.gpg
sudo pacman-key --lsign-key 92D5E96D8F63C75E4116AA1FF5C8C4603D0D250C

# Paste at the end of /etc/pacman.conf:
[marfrit]
Server = https://packages.reauktion.de/arch/$arch
SigLevel = Required DatabaseRequired

sudo pacman -Sy

Adding the repo (Debian)

sudo install -m 755 -d /etc/apt/keyrings
curl -s https://packages.reauktion.de/marfrit.gpg | \
    sudo gpg --dearmor -o /etc/apt/keyrings/marfrit.gpg

echo "deb [signed-by=/etc/apt/keyrings/marfrit.gpg] https://packages.reauktion.de/debian $(lsb_release -cs) main" | \
    sudo tee /etc/apt/sources.list.d/marfrit.list

sudo apt update

Signing key

  • Fingerprint: 92D5E96D8F63C75E4116AA1FF5C8C4603D0D250C
  • UID: Markus Fritsche (marfrit-repo signing) <mfritsche@reauktion.de>
  • Expires: 2030-04-13

Key management procedures (renewal, rotation, revocation) live in DokuWiki at private:reauktion:marfrit_repo_key (admin-only).

Layout in this Git repo

marfrit-packages/
├── README.md
├── arch/
│   └── distcc-avahi/                # ALARM distcc with --with-avahi
├── debian/                          # (future) Debian source packages
└── .gitea/
    └── workflows/
        └── build.yml                # CI pipeline stub

Mail

mfritsche@reauktion.de.

S
Description
ALARM aarch64 + Arch x86_64 + Debian arm64/amd64 overlay repo — published at packages.reauktion.de
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