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Switch musicdolphin's screen from the IR remote's power key

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pi_kiosk installs kiosk-screen on|off|toggle|status, which switches the monitor via
DPMS on the kiosk's X display (the Dell P2419H has no HDMI-CEC). Turning it back on
also turns DPMS off again, as .xinitrc does, so the screen never blanks by itself.

musicdolphin's backend config runs `kiosk-screen toggle` for the power key (the new
screen: section, MusicMouse 2d0caeb). config.yml is install-once, so the running host
is changed by hand the same way.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Martin Bauer
2026-10-03 16:13:29 +02:00
parent 84b0470b49
commit ea00e045f9
4 changed files with 65 additions and 0 deletions
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9
roles/pi_kiosk/README.md
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@@ -15,6 +15,15 @@ Vars:
Meant to run alongside `pi_musicmouse` on the same host when it's serving the page
locally (the default `pi_kiosk_url`), gated in `mediapis.yml` by `mediapi_has_monitor`.
## Switching the screen off
`/usr/local/bin/kiosk-screen on|off|toggle|status` switches the monitor through DPMS:
X stops the HDMI signal and the monitor goes into standby, while the browser and
whatever is playing carry on. It is there for the MusicMouse backend, whose `screen:`
config section runs `kiosk-screen toggle` on the IR remote's power key, and works the
same as root over ssh. HDMI-CEC would switch a TV off properly, but musicdolphin's Dell
P2419H does not speak it, and every monitor understands losing its signal.
## Why Chromium
Firefox was the original choice and lost on measurement. Same page, same machine, idle: