Created attachment 166221 [details] wallpaper-previews-missing After upgraede from plasma5 to plasma6 the wallpapers thumbnails don't show up in the menu for changing wallpapers STEPS TO REPRODUCE 1. Rightclick on the desktop to change wallpaper 2. changing works but wallpapers are shown as empty boxes 3. Previes work in dolphin with no issues OBSERVED RESULT See attached image EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Created attachment 166222 [details] log
"QQuickPaintedItem::textureProvider: can only be queried on the rendering thread of an exposed window" Seems relevant. What distro and version of Plasma 6 are you using?
it might suggest the relevant kio thumbnailers to not be installed? in this case it might be a packaging issue
Opensuse Tumbleweed plasma 6.0 sudo rpm -qa |grep -i thumbna kdegraphics-thumbnailers-23.08.4-1.2.x86_64 gdk-pixbuf-thumbnailer-2.42.10-1.6.x86_64 btw , elsewhere (eg. dolphin) thumbnails work ok
not 100% sure, now it works and I think it's because I installed kio-extras 24.02 rpm (opensuse tumbleweed) so definitly packaging issue, although login might be a bit more precise