Files
Classroom_Desktop/config/plasma/xdg/kdeglobals
T
ekklesiaandClaude Opus 5 2ff9d47be9 feat: decide the classroom's audio output from what is plugged in
The room that prompted this had a television on HDMI with working PCM
audio and nothing in the analog jack, and WirePlumber chose analog. A
teacher who corrected it by hand then had to restart the browser before
any sound came out.

The policy is a pure function so it can be tested against that room
rather than against a machine: an unavailable port is not a candidate,
an analog port merely existing is not evidence of a cable, and an
explicit AUDIO_OUTPUT overrides the lot. Twelve cases, the real room
among them.

The daemon follows PipeWire's own event stream rather than polling, and
moves streams that are already playing, which is the part that stops a
teacher having to close and reopen the browser.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-10 08:47:28 -05:00

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# Ekklesia Classroom session policy.
#
# Installed to /etc/xdg/kdeglobals, where it is the bottom of Plasma's
# configuration cascade. Every group is marked [$i] — immutable — so a
# teacher, a stray click or a misbehaving application cannot override it
# from the user's own configuration. This is KDE's own Kiosk mechanism:
# nothing here is achieved by deleting a binary or hiding a menu entry.
#
# Lifting a restriction for maintenance is a one-line edit to this file
# followed by a session restart, which is what makes the appliance
# serviceable rather than merely locked.
[KDE Action Restrictions][$i]
# No way to reach a shell, a command line, or an arbitrary program.
action/kdesktop_rmb=false
action/kwin_rmb=false
action/openwith=false
action/switch_user=false
action/start_new_session=false
action/lock_screen=false
run_command=false
shell_access=false
logout=false
# The desktop and the panel are a fixed part of the appliance.
editable_desktop_icons=false
editable_bookmarks=false
movable_toolbars=false
plasma/plasmashell/unlockedDesktop=false
plasma-desktop/scripting_console=false
# Nothing in the classroom should offer to file a bug or open a manual.
action/help_report_bug=false
action/help_about_kde=false
action/help_contents=false
# Not immutable. Marking this group [$i] froze the colour scheme so hard
# that `classroom-theme light` changed the running session and then lost
# the change at the next start — measured. These are defaults for a room
# that has no settings application anyway; the lock belongs on the
# restrictions above, not on the palette.
[General]
ColorScheme=EkklesiaDark
AccentColor=79,179,168
# The teacher's own words are not decoration: keep text rendering plain
# and readable rather than styled.
XftAntialias=true
XftHintStyle=hintslight
XftSubPixel=rgb
[KDE]
widgetStyle=Breeze
LookAndFeelPackage=org.ekklesia.classroom.desktop
SingleClick=false
AnimationDurationFactor=0.5
[Icons]
Theme=breeze-dark
[KFileDialog Settings][$i]
Allow Expansion=false
Automatically select filename extension=true
Show Bookmarks=false
Show Full Path=false
Show Inline Previews=false
Show Speedbar=false
Sort directories first=true