https://bugs.kde.org/show_bug.cgi?id=503319
Bug ID: 503319
Summary: Thumbnailer hangs on .3mf files
Classification: Frameworks and Libraries
Product: kio-extras
Version: 25.04.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: Thumbnails and previews
Assignee: plasma-b...@kde.org
Reporter: sonichipm...@gmail.com
Target Milestone: ---
SUMMARY
Thumbnailer gets stuck trying to read 3D printer 3mf models and consumes 100%
of a cpu core. Hung process might need killed, terminate isn't enough. Closing
the Dolphin tab or window inconsistently solves it. Disabling "Office
Documents" previews solves it.
STEPS TO REPRODUCE
1. Download a 3mf model
2. Enable "Office Document" previews if disabled
3. Navigate to your downloaded file
OBSERVED RESULT
Thumbnails stop being generated everywhere, cpu usage spikes, hovering 3mf
files freezes Dolphin.
EXPECTED RESULT
Thumbnail either succeeds or fails to generate and moves onto other files.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Garuda Linux 6.14.3-zen
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.13.0
Qt Version: 6.9.0
ADDITIONAL INFORMATION
I checked the source code for thumbnailer file types and I don't see any recent
changes that should have done this, so it could be caused by something else.
Also why is 3mf under Office Documents, shouldn't it be in Blender files?
https://invent.kde.org/network/kio-extras/-/blob/master/thumbnail/opendocumentthumbnail.json
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