# Gnoppix KDE: Wallpaper preview isnt showing

**URL:** <https://forum.gnoppix.org/t/gnoppix-kde-wallpaper-preview-isnt-showing/7848>\
**Category:** Issues and Help\
**Created:** [November 9, 2026, 8:23am UTC](https://forum.gnoppix.org/t/gnoppix-kde-wallpaper-preview-isnt-showing/7848 "2026-11-09T08:23:22Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![amu](https://forum.gnoppix.org/user_avatar/forum.gnoppix.org/amu/32/7_2.png) [@amu](https://forum.gnoppix.org/u/amu)\
**Post date:** [November 9, 2026, 8:23am UTC](https://forum.gnoppix.org/t/gnoppix-kde-wallpaper-preview-isnt-showing/7848/1 "2026-11-09T08:23:22Z")

</div>

How to fix:

1. Installed kio-extras provides the thumbnail KIO slave (thumbnail.so) that Plasma uses to generate wallpaper previews
2. Cleared thumbnail cache `rm -rf \~/.cache/thumbnails/\* \~/.cache/plasma\*`
3. Increased thumbnail size limits created ~/.config/kioslaverc with:

```auto
   [Thumbnail\] 
   MaximumSize=100000000 
   MaximumRemoteSize=100000000

```

On your KDE desktop now run:

> pkill plasmashell && plasmashell --replace &

This allows thumbnails for large wallpapers (e.g., 6016×6016 = 36MP images) while those big images also block the smaller one.

After running the restart command on your desktop, open System Settings → Appearance → Wallpaper → previews should now appear.