Hi all, first of all many thanks for your work on Kubuntu. I have been using it exclusively for the last 5 years so it is an important part of my daily life.
I have some issues with Dolphin and previews, and wanted to ask some details about the whole system. I will point out some problems (in my opinion), but I just want to understand and perhaps help improving Kubuntu. My issue starts with a fresh installation of Kubuntu Wily, where Dolphin does not previews PDFs. So I went to Control -> Configure Dolphin... -> General - >Previews and found the following available choices ("#" marks the active ones): * Comic Books # Folders * Font files # Images (GIF, PNG, BMP, ...) # JPEG Images * SVG Images * Text Files First problem: it is incredibly difficult to find updated information on this matter. Is there an official manual somewhere? How is a new user supposed to find how to add new choices? All I can find are old blog and forum posts related to KDE4. Second thought: I would install the required packages by default, and the same for video thumbnails. On some KDE4-related forums this issue is solved by installing the kdegraphics-thumbnailers package, so I tried investigating it. Installing it does not change the set of preview choices in Dolphin, however. This package installs things in /usr/lib/kde4 (e.g. /usr/lib/kde4/gsthumbnail.so) and /usr/share/kde4/services (e.g. /usr/share/kde4/services/gsthumbnail.desktop). Looking around in the system, however I found that KDE5 services are in /usr/share/kservices5. Where does Dolphin look for thumbnailer plugins? How is this configured? Moreover, there are two installed jpegthumbnail.so, one coming from kde-runtime (/usr/lib/kde4/jpegthumbnail.so) and another coming from kio-extras (/usr/lib/x86_64-linux-gnu/qt5/plugins/jpegthumbnail.so). What's the difference? The file /usr/share/kservices5/jpegthumbnail.desktop is then installed by kio-extras-data, while /usr/share/kde4/services/jpegthumbnail.desktop is installed by kde-runtime-data. I'm very confused. A summary of my questions: * Is it possible to improve UX in adding/removing Dolphin preview plugins? * Is it possible to consider installing PDF and video thumbnails by default? * How are PDF previews enabled on Wily? * Where does Dolphin look for thumbnailer plugins and how to configure it? * What is the difference between the kde-runtime thumbnailers (e.g. jpegthumbnail.so) and the kio-extras ones? * What is the difference between kio-extras-data .desktop files and kde-runtime-data ones? Thank you very much in advance Leo Leonardo Giordani @tw_lgiordani <http://twitter.com/tw_lgiordani> - lgiordani.com My profile on About.me <http://about.me/leonardo.giordani> - My GitHub page <https://github.com/lgiordani>
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