Bug 496917

Summary:	wallpapers dont load their thumbnails in plasma settings wallpaper, desktop settings or dolphin
Product:	[Applications] systemsettings	Reporter:	pollux/ned <pollux66>
Component:	kcm_wallpaper	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	normal	CC:	john.kizer, meven
Priority:	NOR
Version First Reported In:	6.2.4
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	wallpaper another wallpaper screenshots of what its looks like

Description pollux/ned 2024-12-02 06:11:26 UTC

SUMMARY
Some of my wallpapers thumbnails dont show properly in kde's wallpaper setting or desktop settings, wallpapers, they instead show a white image

STEPS TO REPRODUCE
1. Use some of the wallpapers i have provided that dont load thumbnails properly
2. Check dolphin, desktop wallpaper settings, wallpaper settings

OBSERVED RESULT
Thumbnails dont load on any of them

EXPECTED RESULT
Should show the thumbnails

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Endeavour os
KDE Plasma Version: 6.2.4
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.0

ADDITIONAL INFORMATION
I feel like i may be missing some package for these thumbnails to load but i dont know what package i need, it would be nice if there was a popup saying your missing a certain plugin or package of somesort to get these thumbnails to load properly instead of having to go to the internet to figure out which package i need

Checking the arch wiki i have both kdegraphics-thumbnailers and ffmpegthumbs

Comment 1 pollux/ned 2024-12-02 06:12:26 UTC

Created attachment 176278 [details]
wallpaper

Comment 2 pollux/ned 2024-12-02 06:12:55 UTC

Created attachment 176279 [details]
another wallpaper

Comment 3 pollux/ned 2024-12-02 06:19:22 UTC

Created attachment 176280 [details]
screenshots of what its looks like

Comment 4 pollux/ned 2024-12-02 06:22:08 UTC

One thing iv noticed with these images is that they show jpeg as type but then it also shows content as png image

while the other jpeg images dont show content as png image and they load their thumbnails fine

Comment 5 pollux/ned 2024-12-02 06:25:17 UTC

Here is some more wallpapers that dont load aswell as i cant upload them through here directly

https://drive.proton.me/urls/YG4NXEXQS0#bwzuXub2ICrX

Comment 6 John Kizer 2024-12-11 05:47:36 UTC

Hi - do those wallpapers show thumbnails correctly if you correct their filename extensions from .jpg to .png? Regardless of the extension they have, the content of the files is PNG images, so they won't display correctly if attempted to be processed by a JPEG thumbnailer.

Comment 7 pollux/ned 2024-12-11 05:55:01 UTC

(In reply to John Kizer from comment #6)
> Hi - do those wallpapers show thumbnails correctly if you correct their
> filename extensions from .jpg to .png? Regardless of the extension they
> have, the content of the files is PNG images, so they won't display
> correctly if attempted to be processed by a JPEG thumbnailer.

Yes that does the fix the problem, thanks :)

Comment 8 John Kizer 2024-12-11 06:13:53 UTC

Glad that worked!