Hello!
Since a few months Dolphin does not save the thumbnails of the (second) internal SSD anymore. They are recreated every time I open a folder.
The preview images of the SSD where KDE is installed do not have these problems.
This problem does not exist with Thunar under KDE.
Can someone help?
open dolphin/settings/configure dolphin/generel/previews select the previews you want, set the ‘skip previewd for local files above’ to ‘no limit’ and check …
if doesnt work, is your second disk being mounted on boot?
Dolphin uses the kdegraphics-thumbnailer while Thunar uses the dbus service via tumbler installed via File Manager Settings for Thunar. Even tho both are saving the thumbnails in your home directory ~/.cache/thumbnails/ (see the folders in there) each has an unique ID file name, and for the same original image the thumbnail will have a different compression, so it might be because of that Dolhin fails to display thumbnails created wit the other tool. I might be wrong on this. Also, i think the new way to create thumbnails on Dolphin, for image files, to me looks like has a bit of regression …
The value is set to ‘no limit’, the second value I set to 16,000 MB. Yes, the second hard disk is mounted at boot time.
Dolphin recognizes the thumbnails that Thunar has created and loads these thumbnails when opening a folder.
How to create thumbnails other than by opening a folder in Dolphin?
AFAIK the thumbnails are generated on demand, but i have seen some scripts here https://askubuntu.com/questions/199110/how-can-i-instruct-nautilus-to-pre-generate-thumbnails
using a routine outside the file manager …
Edit:
In case you want to try, remove from ~/.config/dolphinrc the entry related to [PreviewSettings] and everything under it, save it, and reopen Dolphin …
so go again to dolphin settings/ previews and modify the skip previews for remote files as you desire … on the kde channel it was mentioned that it is a bug and this should give you previews … if it doesnt work than changing kernels should also help…
Unfortunately, neither of these helped.
and what size did you input? you could try something large like 5 giga
I tried 100 MB, 16,000 MB and 32,000 MB.
I have known in the past that someone had the same problem that is caused by some package e.g. (wps-office) or third party application.
You can check if creating a new user also has the same problem?
Is that drive encrypted?
That was not the reason.
Yes, encrypted.
Thanks to all for the help. Then we have found the error. It is a bug.
For all those who are looking for a solution: Install Thunar (thunar, tumbler, ffmpegthumbnailer) and create the thumbnails with it. They will then also be recognized by Dophin.
Adjust the file size in: /etc/xdg/tumbler/tumbler.rc
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