lock-before-suspend released the logind sleep delay inhibitor as soon as Qt
reported the lock rendered (afterAnimating/afterRendering). That signal fires
before the compositor has committed/presented the ext-session-lock surface, so
the machine could freeze ~1 frame later with the desktop still the last
presented frame. On resume the desktop was briefly visible before the lock
appeared (both suspend and hibernate).
Gate lockerReady on WlSessionLock.secure (the ext-session-lock `locked` event),
so the inhibitor is held until the compositor confirms the session is locked and
the desktop is hidden. LockSurface passes the WlSessionLock down as sessionLock;
the readiness check returns early until secure, and re-fires on secureChanged.
The Go-side fallback timer in loginctl monitor remains as the backstop.
Reproduced on niri / s2idle with 3 outputs: debug log showed lockerReady sent
18 ms before `PM: suspend entry`; with this change the desktop no longer flashes
on resume.
Signed-off-by: Thomas Kroll <99196436+tkroll-ionos@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
(cherry picked from commit 237fb57d5e)
* feat(lockscreen): enable use of videos as screensaver in the lock screen
* reducing debug logs
* feature becomes available only when QtMultimedia is available
Thomas Kroll