Bug 506529

Summary: X11 Thumbnails do not work since march '25
Product: [Frameworks and Libraries] kio-extras Reporter: nyl <nylle>
Component: Thumbnails and previewsAssignee: Plasma Bugs List <plasma-bugs-null>
Status: VERIFIED FIXED    
Severity: major CC: kdedev, msdobrescu, voncloft
Priority: NOR    
Version First Reported In: 25.03.80   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In: 25.08.0
Sentry Crash Report:

Description nyl 2025-07-03 11:52:21 UTC 
SUMMARY
I am using dolphin as my file explorer.
I have downgraded my kio-extras to 24.12.3-1 to get thumbnails working again.
I did not test 25.03.80, 25.03.90, (25.04.0 not sure if I tested this one but doubt)
I tested 25.04.1 and it doesnt work with that one nor anything after.
Some thumbnails with the latest version but by far not all of them, let alone folder thumbnails previewing images / video files in folders.
Video previews do not exist in the latest version.
Nothing does it's just borked and not taken care of whatsoever since march.
Yes this is X11 only.

STEPS TO REPRODUCE
1.  kio extras > 25.04.1
2. x11 duh

OBSERVED RESULT
not having thumbnails for images/videos etcetc

EXPECTED RESULT
to have thumbnails

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux 6.15.3-arch1-1
KDE Plasma Version:  KDE Plasma 6.4.1
KDE Frameworks Version: huh?
Qt Version:  6.9.1-2

ADDITIONAL INFORMATION
Even with downgraded kio-extras it's a much better experience than with non working thumbnails so .. fix please?
happy to provide whatever info is needed if steps to follow are given because I have no Idea how to debug dolphin to the point where it outputs what's wrong.
Comment 1 Mihai Sorin Dobrescu 2025-07-05 04:25:16 UTC 
Same here, I have no thumbnails anymore.
It is so uncomfortable.

Operating System: MocaccinoOS 
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.13.0
Qt Version: 6.9.1
Kernel Version: 6.12.35-mocaccino (64-bit)
Graphics Platform: X11
Processors: 16 × 11th Gen Intel® Core™ i7-11700K @ 3.60GHz
Memory: 62.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1060 6GB
Manufacturer: ASUS
Comment 2 voncloft 2025-07-14 23:50:59 UTC 
same 25.04.0 as well although wayland doesnt make them either
Comment 3 voncloft 2025-07-15 21:21:24 UTC 
version 24.12.3 seems to work but any other version breaks the preview for thumbnailes ..... 7 months and no fix? seriously?
Comment 4 nyl 2025-07-30 08:10:19 UTC Comment hidden (spam)
Comment 5 nyl 2025-08-19 13:43:55 UTC 
fixed with kio-extras 25.08.0-1
thank you and finally.
Comment 6 TraceyC 2025-08-19 16:31:47 UTC 
Thanks for letting us know.