fix: keep the DVD player whole
Removing gtk-layer-shell from the dependencies broke classroom-dvd on the first run, and deleting the dock's stylesheet took the DVD control bar's styling with it. Both go back: the template under a name that says what still uses it, and the dependency with a line in the package description explaining that it is there for the disc player and not for a dock. A probe overlay confirms gtk-layer-shell works under KWin, so the loading cover survives the move. The focus helper still speaks sway, which is written down rather than papered over. Co-Authored-By: Claude Opus 5 <[email protected]>
This commit is contained in:
ekklesia
co-authored by
Claude Opus 5
Claude Opus 5
parent
682e3b0552
commit
d5cc6e463f
@@ -322,6 +322,27 @@ back from four consecutive kills.
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### DVD
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**How much of the DVD player survives this change was measured, not
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assumed**, because the room's disc playback works and breaking it for
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tidiness would be a bad trade.
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* Its loading cover and control bar are `gtk-layer-shell` surfaces. KWin
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implements `zwlr_layer_shell_v1` — the Plasma panel is one — and a probe
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overlay came up full-screen under it. So the DVD surfaces keep working
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and `python3-gi` and `gir1.2-gtklayershell-0.1` stay in the package.
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Removing them broke `classroom-dvd toggle` immediately, which is how this
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was found.
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* Its stylesheet was the dock's. The dock is gone; the template survives as
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`config/overlay/style.css.in`, renamed to say what still uses it.
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* `classroom-dvd` calls `classroom-window`, which speaks sway's IPC.
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Measured with no sway running: it exits 0 and does nothing, so it
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degrades rather than hanging — but the DVD player's focus handling is not
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yet ported, and that is the largest piece of work this change leaves.
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* One behavioural difference: under sway the loading cover hid the dock;
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under KWin the panel draws above it, so the bar stays visible while a
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disc spins up. Fullscreen VLC still covers everything, which is the state
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that matters.
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`/usr/share/solid/actions/ekklesia-dvd.desktop` with an
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`X-KDE-Solid-Predicate` for a video DVD. Plasma's device notifier offers
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"Play the DVD" while a disc is in the drive and withdraws it when the disc
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@@ -443,11 +464,15 @@ running · `state-4-minimized` · `state-5-restored` · `v2-testpage` a
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maximised browser · `v2-secondary-window` a window a page opened, floating ·
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`v2-print-dialog` · `v2-notification-crop` · `v2-fullscreen` · `recover-panel`
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the bar rebuilt from nothing · `lock-desktop-rmb`, `lock-panel-rmb`,
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`lock-krunner` the lockdown.
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`lock-krunner` the lockdown · `v2-from-package` the desktop as installed
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from the `.deb` · `v2-layershell` a gtk-layer-shell overlay under KWin, which
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is what the DVD player's loading cover is made of.
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## Not done, and honest about it
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* **DVD end to end.** No drive in the lab.
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* **DVD end to end.** The overlay surfaces and disc detection were checked;
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playback was not, and the focus helper is not ported. See *the DVD
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player* above.
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* **Real audio hardware.** Policy tested as a function; no card to apply it to.
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* **Video decode and performance.** Software rendering only.
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* **SDDM.** Recommended over the current `bash_profile` `exec`, because when
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@@ -458,8 +483,68 @@ the bar rebuilt from nothing · `lock-desktop-rmb`, `lock-panel-rmb`,
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shape the package needs but is not the package.
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* **Parent Call and Live View.** Placed in the architecture, not built. Live
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View's pin is KWin's Keep Above, which is already a title-bar button.
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* **UI scale.** Plasma's own display scaling replaces `classroom-scale`; not
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exercised at 1.25 or 1.5.
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* **UI scale.** `classroom-scale` now asks `kscreen-doctor` instead of the
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compositor, and 1.25 was applied and read back correctly. The *look* of it
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could not be judged: a nested session shrinks its own canvas to the
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logical size instead of keeping the display's mode, so everything got
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smaller rather than larger. On a real output it does the opposite. Judge
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this one on hardware.
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* **Network states.** plasma-nm is in the bar and live — it correctly showed
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a problem state throughout, because Docker configures the container's
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interface before NetworkManager sees it and NM reports limited
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connectivity for it. Online, connecting and offline transitions need a
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machine whose network NetworkManager actually owns.
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## Unresolved risks
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In the order I would worry about them.
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1. **The DVD player is half-ported.** Its surfaces and its disc detection
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work; its window focusing still speaks sway and silently does nothing.
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A room that uses DVDs should not take this build until that is finished
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and a real disc has been played.
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2. **SDDM is configured and untested.** It cannot be exercised in a
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container, and it is the thing that starts the session. If the config is
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wrong the room boots to nothing. This is the first thing to check on a
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VM or a bench machine, and it is why the checklist below starts there.
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3. **No real audio hardware has been through the policy.** The decision is
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well tested; applying it is not. A wrong `pactl set-card-profile` on
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real hardware is a silent room.
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4. **Plasma is a much larger surface than sway.** More code, more services,
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more that can regress in a Debian point release. The mitigations are
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that all of it is supervised, that Debian 13 is frozen apart from
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security updates, and that the OTA channel structure already lets a
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build be held back. But it is a real trade and it should be named.
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5. **Performance is unmeasured on classroom hardware.** Everything here ran
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on llvmpipe, which says nothing useful about an old office machine with
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Intel graphics. Plasma with compositing is heavier than sway.
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6. **Chrome remains a third-party repository.** Unchanged from today, but
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still the one part of the stack Debian does not update.
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7. **The wallpaper is a stand-in.** The real illustration has not been seen
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against this palette.
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## Would I trust it on a classroom computer, unattended, for a Sunday?
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**For a room that does not use DVDs: yes, after the checks below.** The
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reasoning is not that Plasma is nicer. It is that the four failures the
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church actually reported are all failures of code we wrote, three of them
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are gone because the code is gone, and the fourth — the panel disappearing
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— went from *reproducible on the third crash* to *survived eight kills* and
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is now a supervised system service rather than a process started by a
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compositor and forgotten.
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**For a room that uses DVDs: not yet.** Finish the focus port and play a
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real disc first.
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Before any room:
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1. Boot a bench machine from the package and confirm SDDM autologins, and
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that killing the session brings it back rather than a shell.
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2. Put a television on HDMI, switch it on after the computer, and confirm
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sound arrives without touching anything, with the browser already open.
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3. Print to Elmer.
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4. Play a DVD, if that room uses them.
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5. Leave it running from Friday to Sunday.
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## Alternate operating systems
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