EPIC-18: KDE Screen Locker (kscreenlocker) plugin #19

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opened 2026-07-27 13:24:24 +02:00 by elegos · 0 comments

elegos commented

2026-07-27 13:24:24 +02:00

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Goal

Provide biometric authentication feedback on the KDE Plasma lockscreen (kscreenlocker), separate from the SDDM login greeter (EPIC-13).

Context

kscreenlocker is the session locker used by KDE Plasma. It is independent of SDDM and uses PAM (service name kde) for authentication. The pam_linux_hello.so module (EPIC-05) handles auth automatically; this EPIC adds the graphical overlay.

Scope

Subscribe to D-Bus signals from linux-hello-daemon (AuthStarted, AuthProgress, AuthResult)
Render overlay feedback inside the kscreenlocker QML surface (plugin or D-Bus-driven KWin effect)
Reuse Slint overlay components from EPIC-10 where possible, or provide a QML equivalent
No PAM changes needed

Dependencies

EPIC-04 (auth daemon)
EPIC-10 (Slint auth overlay — visual component)

Out of scope

SDDM login screen (EPIC-13)
KDE Wallet unlock after auth (EPIC-16)

## Goal Provide biometric authentication feedback on the KDE Plasma lockscreen (`kscreenlocker`), separate from the SDDM login greeter (EPIC-13). ## Context `kscreenlocker` is the session locker used by KDE Plasma. It is independent of SDDM and uses PAM (service name `kde`) for authentication. The `pam_linux_hello.so` module (EPIC-05) handles auth automatically; this EPIC adds the graphical overlay. ## Scope - Subscribe to D-Bus signals from `linux-hello-daemon` (`AuthStarted`, `AuthProgress`, `AuthResult`) - Render overlay feedback inside the kscreenlocker QML surface (plugin or D-Bus-driven KWin effect) - Reuse Slint overlay components from EPIC-10 where possible, or provide a QML equivalent - No PAM changes needed ## Dependencies - EPIC-04 (auth daemon) - EPIC-10 (Slint auth overlay — visual component) ## Out of scope - SDDM login screen (EPIC-13) - KDE Wallet unlock after auth (EPIC-16)

elegos added the

area: ui

epic

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2026-07-27 13:41:05 +02:00

elegos added this to the Foundation project

2026-07-27 13:41:30 +02:00

elegos closed this issue

2026-07-28 12:22:50 +02:00