Bug 511828

Summary:	Face recognition settings incorrect after crash
Product:	[Applications] digikam	Reporter:	Andy <zunar>
Component:	Faces-Detection	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	crash	CC:	caulier.gilles
Priority:	NOR
Version First Reported In:	9.0.0
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:	https://invent.kde.org/graphics/digikam/-/commit/1923e78ec99efbb59f095353c148343c42306684	Version Fixed/Implemented In:	9.0.0
Sentry Crash Report:

Description Andy 2025-11-08 14:59:26 UTC

Hi!

After a program crash (e.g., computer crash or ending the task in Task Manager), the face recognition settings are changed. The accuracy is set to 10 and the face size to Large.
If I then set my preferred values again (7 and Very Small) and try to manually detect faces in a photo, it doesn't work. The program has to be closed and restarted first. Only then, when I detect faces in the photo, does it work.

Perhaps it's possible to save the settings permanently so that a program crash, regardless of how it happens, doesn't change them.

Regards Andy

Comment 1 caulier.gilles 2025-11-08 18:27:26 UTC

Sounds like a race condition. Typically the settings are registered in configuration files hosted in the user account before to star the face engine. Probably a component relevant of the DNN model using the GPU is initialized at the same time in a separated thread. We will take a look.

Best regards

Gilles Caulier

Comment 2 Maik Qualmann 2025-11-09 12:43:56 UTC

Git commit 1923e78ec99efbb59f095353c148343c42306684 by Maik Qualmann.
Committed on 09/11/2025 at 12:43.
Pushed by mqualmann into branch 'master'.

fix wrong face scan settings in the config
FIXED-IN: 8.9.0

M  +1    -1    NEWS
M  +4    -4    core/app/views/sidebar/peoplesidebarwidget.cpp
M  +5    -1    core/libs/facesengine/widgets/facescanwidget.cpp

https://invent.kde.org/graphics/digikam/-/commit/1923e78ec99efbb59f095353c148343c42306684