Pdf thumbnails in dolphin 25.08.2 in Kubuntu 25.10 are visible only in Home directory; in other local disks no pdf thumbnail preview SUMMARY Pdf thumbnails visible only in Home directory STEPS TO REPRODUCE 1. Start Dolphin 2. Navigate to a folder of a local disk with Pdf files OBSERVED RESULT No Pdf thumbnails EXPECTED RESULT Pdf thumbnails SOFTWARE/OS VERSIONS Linux/KDE Plasma: Kubuntu 25.10 KDE Plasma Version: 6.5.0 KDE Frameworks Version: 6.19.0 Qt Version: 6.9.2 ADDITIONAL INFORMATION Starting Dolphin from Konsole, when entering a local disk folder containing pdf files the error "kf.imageformats.plugins.tga: TGAHandler::canRead() error while reading the header GPL Ghostscript 10.05.0: Unrecoverable error, exit code 1" is shown in Konsole. Entering a folder in Home containing pdf files the thumbnail is present e no errors are shown.
Is the local disk in question indexed? System Settings > Workspace > Search > Locations
(In reply to Eidur Eidsson from comment #1) > Is the local disk in question indexed? > System Settings > Workspace > Search > Locations No, local disks are not indexed. Local disks are not indexed in Kubuntu 25.04 (Dolphin 25.04.3) as well but pdf files thumbnails are shown.
Local disks are now indexed but pdf files thumbnails are not shown; pdf files thumbnails are shown only in Home directory
Think I may be experiencing the same issue. Fairly sure it started when I upgraded from Kubuntu 25.04 to 25.10. System reports current Plasma version as 6.4.5. What I've noticed is that existing PDF files in non-Home directories retain their thumbnail previews if they already had them (presumably because they're cached already), but any new PDFs added to a non-Home directory (e.g., the secondary hard drive I save most of my files to) will not have a preview thumbnail. For example, downloading a fresh file (lands in ~/Downloads) will show a preview, and copying that file to ~/Downloads or ~/Documents will show a preview, but copying it into a folder on a mounted drive will not. Copying a PDF file on a mounted drive that already has a thumbnail results in the new copy not having a thumbnail. Looking in the File Search settings, I see that my /home folder is technically indexed, but I don't actually have file indexing enabled right now. The file indexing setting would've been disabled from well before this issue first started happening. Let me know if there's any other info I can provide that'll help.
(In reply to latibulia from comment #4) > Think I may be experiencing the same issue. Fairly sure it started when I > upgraded from Kubuntu 25.04 to 25.10. System reports current Plasma version > as 6.4.5. > > What I've noticed is that existing PDF files in non-Home directories retain > their thumbnail previews if they already had them (presumably because > they're cached already), but any new PDFs added to a non-Home directory > (e.g., the secondary hard drive I save most of my files to) will not have a > preview thumbnail. For example, downloading a fresh file (lands in > ~/Downloads) will show a preview, and copying that file to ~/Downloads or > ~/Documents will show a preview, but copying it into a folder on a mounted > drive will not. Copying a PDF file on a mounted drive that already has a > thumbnail results in the new copy not having a thumbnail. > > Looking in the File Search settings, I see that my /home folder is > technically indexed, but I don't actually have file indexing enabled right > now. The file indexing setting would've been disabled from well before this > issue first started happening. > > Let me know if there's any other info I can provide that'll help. Forgot to mention my Dolphin version, sorry! Dolphin 25.08.1