Bernardo Magri
44ecc9094e
Some checks failed
Check / eval (push) Has been cancelled
Round 6 passed on the plug side but unplugging the cable left the laptop
panel black until it was re-docked. The journal named it: across three
undocks, two logged result=enable-timeout and one result=ok — a race, not
a logic error.
Two halves, both needed:
- `hyprctl keyword monitor eDP-1,preferred,auto,1` is accepted (exit 0)
while Hyprland is still tearing down the departing external, then
silently dropped. Re-issue it on every poll for 5s and keep `monitors`
listing the panel — not hyprctl's exit code — as the only proof.
- The watcher fired the undock once off the removal event and marked the
departure handled regardless (`|| true` + awaiting_lid_open=1). Since
known_outputs had already moved, the set-changed guard never reopened
and nothing retried, so one lost keyword cost the panel until re-dock.
The undock is now a queued invariant driven on the 1s tick, bounded at
6 attempts so a genuinely unenableable panel can't pin the inhibitor.
The VM harness cannot reach this race: QEMU's headless backend aborts
Hyprland if the last active output is deleted while the DRM output is
disabled, so the test must undock before removing DP-1 and never collides
the two. Noted there, and V3 queued as round 7 — unplug 5+ times, since
the old failure only hit ~2 in 3.
Verified: V2 — nix flake check --no-build; monitor-fallback.nix exit 0 in
57s; shellcheck clean. The fix itself is V3 pending.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>