Bug 485981

Summary:	"Open in File Manager" causes 100% CPU usage in process: kde-open5 file://<path to folder>
Product:	[Applications] digikam	Reporter:	MarcP <iwannaberich>
Component:	Usability-OpenWith	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	CONFIRMED ---
Severity:	normal	CC:	caulier.gilles, iwannaberich, mail, metzpinguin
Priority:	NOR
Version First Reported In:	8.4.0
Target Milestone:	---
Platform:	Appimage
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description MarcP 2024-04-22 20:19:37 UTC

SUMMARY
I noticed that when I right click on a picture, and select Open in File Manager, instead of Dolphin showing the contents of the folder where the picture is located, nothing happens. Upon inspecting the running processes, I noticed that there's a stuck process that is using all the CPU: 

kde-open5 file://<path to folder>

I don´t know when it started. I'm currently using the digiKam-8.4.0-20240421T104710-Qt6-x86-64.appimage, but it used to work in previous versions. I thought it might have something to do with the folder path having spaces or special characters, but it doesn't seem to matter. Also, running that kde-open5 command directly on a bash console seems to open Dolphin to that folder. 

STEPS TO REPRODUCE
1. Right click on a picture. Open in File Manager.

OBSERVED RESULT
Nothing happens

EXPECTED RESULT
File browser should open at that location.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 22.04 LTS
digiKam-8.4.0-20240421T104710-Qt6-x86-64.appimage
(available in About System)
KDE Plasma Version: 5.24.7
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION

Comment 1 Maik Qualmann 2024-04-22 20:34:32 UTC

I'm already on a KF6 desktop. But I can also confirm the problem with the AppImage, Dolphin does not open. However, I don't have 100% system load, but I see these messages:

/usr/bin/dolphin: /tmp/.mount_digiKaO1moPr/usr/lib/libQt6Gui.so.6: version `Qt_6.7.0_PRIVATE_API' not found (required by /usr/bin/dolphin)
/usr/bin/dolphin: /tmp/.mount_digiKaO1moPr/usr/lib/libQt6Core.so.6: version `Qt_6.7.0_PRIVATE_API' not found (required by /lib64/libQt6Core5Compat.so.6)

With my native Qt6 developer version there are no problems opening Dolphin.

Maik

Comment 2 Hauke 2024-04-30 20:00:02 UTC

I can confirm the bug under Arch Linux with kioclient 6.0.4 (output of "kde-open --version").

When executing xdg-open like "xdg-open /path/to/file.txt", the kde-open5 command is called with a "file://path/to/file.txt" parameter and directly fails (as far as I can see with exit code 1 but without logging to stdout/stderr). When using xdg-open, this process is endlessly recreated causing a high CPU load.

My expected behavior is that kde-open/kde-open5 is able to deal with "file://..." parameters.

Relevant environment variables on my machine might be XDG_CURRENT_DESKTOP=KDE and KDE_SESSION_VERSION=5.

Comment 3 caulier.gilles 2025-04-04 01:36:00 UTC

Hi MarP,

The new AppImage bundle 8.7.0 pre-release for Linux based on Qt 6.8.3 is
online at usual place :

https://files.kde.org/digikam/

Let's me know if the problem remain.

Best regards

Gilles Caulier