Bug 2452933

Summary: digiKam 9.x Segfaults on Rawhide (F43) due to GLib/PCRE2 ABI mismatch and Qt6 UI regression
Product: [Fedora] Fedora Reporter: kaizubg
Component: digikamAssignee: marcdeop
Status: NEW --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 43CC: alekcejk, kde-sig, marcdeop, than
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OS: Linux   
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Description kaizubg 2026-03-30 05:20:43 UTC 
Description:
Since the updates on March 28, 2026, digiKam (both RPM and AppImage) fails to launch on Fedora 43 (Rawhide). The crash is immediate upon UI initialization.

Technical Details:

Console Warning: libpcre2-8.so.0: no version information available (required by /lib64/libglib-2.0.so.0). This indicates a significant ABI mismatch in the core system libraries.

Crash Point: coredumpctl shows a Segfault in libQt6Widgets.so.6 at QToolBar::widgetForAction.

Session Conflict: The logs show an error: Could not register app ID: Connection already associated with an application ID.

Reproducibility:

Occurs in native RPM (9.0.0-3.fc43) and upstream AppImage (9.0.0 and 9.1.0).

Occurs on Wayland and X11.

Crucial Note: A fresh user account (digikam8) can launch the app only because it fails to connect to the primary user's D-Bus session. When a successful D-Bus/Portal connection is made on the main account, the app crashes during DXmlGuiWindow::cleanupActions().

Reproducible: Always
Comment 1 kaizubg 2026-03-30 05:21:42 UTC 
Created attachment 2135387 [details]
Tracefile