SUMMARY Using Gwenview on Kubuntu 20.04 always the following effect occurs: Opening a shared network directory (pretty fast) containing mixed raw pictures like Nikon NEF and Panasonic RW2 files, only the thumbnails of NEF files are shown, for RW2 files I get no thumbnails but I can open them with Gwenview. The interesting thing is: If i copy such a Panasonic RW2 file to my local desktop directory I get instantly a preview with Gwenview, copying the same file back to a network share makes it again impossible to view a thumbnail of it. Because of the file-size I can attach a Panasonic RW2-file STEPS TO REPRODUCE 1. opening a network share folder with Panasonic RW2 files: No thumbnails of these files 2. opening a local copy of this folder: Preview works 3. copying the local folder back to a network share, preview ability for RW2 files is lost again .... this is reproduceable in different Linux distributions like Mint-Mate etc. ... and thanks a lot for the great work !!, regards Matthias SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Linux (x86_64) release 5.8.0-43-generic (available in About System) KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 ADDITIONAL INFORMATION
Might be the same underlying issue as Bug 432628. Questions for you: 1. What is the approximate filesize of the images that don't show previews? 2. What is the preview filesize limit set in Dolphin > Settings window > Previews > skip previews for remote files above: 3. In the file ~/.config/kdeglobals, what is listed under [PreviewSettings]?
Created attachment 135646 [details] Screenshot_20210212_224207.png Hello Nate, thank you for your fast reply. first of all here are the answers to your questions: 1. approximate filesize is round about 23 mb 2. The previewfilesize settings have been set to 0 mb, but even if I change the value to 30 mb it does not work. (the filesize of Nikon NEFs is round about 30 mb and they are allways visible) 3. [PreviewSettings] MaximumRemoteSize=0 But now something interesting (interesting to me). I installed Nemo filemanager because of it's GVFS support AND if i connect with Nemo to the network directory and use afterwards the GVFS path in Gwenview to navigate to the folder I get the RW2 thumbnails (see 2 attached screenshots and switch between them several times, it is really interesting whats happening with all the thumbnails, and look for the path ...) Unfortunately browsing with GVFS paths through my network picture directories is much much slower than using smb shares. Once again, thank you very much for dealing with my small problem, regards, Matthias Am 12.02.21 um 19:01 schrieb Nate Graham: > https://bugs.kde.org/show_bug.cgi?id=432837 > > Nate Graham <nate@kde.org> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > Resolution|--- |WAITINGFORINFO > CC| |nate@kde.org > Status|REPORTED |NEEDSINFO > > --- Comment #1 from Nate Graham <nate@kde.org> --- > Might be the same underlying issue as Bug 432628. > > Questions for you: > 1. What is the approximate filesize of the images that don't show previews? > 2. What is the preview filesize limit set in Dolphin > Settings window > > Previews > skip previews for remote files above: > 3. In the file ~/.config/kdeglobals, what is listed under [PreviewSettings]? >
Created attachment 135647 [details] Screenshot_20210212_224356.png
It looks like connecting to the share using Nemo caused Nemo to generate thumbnail previews. Since the thumbnails are cross/app/cross DE, Gwenview knows how to access them, once they exist. So it looks like the bug is in Dolphin not generating these thumbnails itself when you use it to browse the folder, despite the fact that your settings appear to be set up for it.