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Thread: Dolphin - previews

  1. #1

    Default Dolphin - previews

    Since installing Leap 15.4 Dolphin regenerates file previews every single time I navigate away from a folder.

    Please could anyone help?

  2. #2

    Default Re: Dolphin - previews

    Note - it only appears to exhibit this behaviour on Network shares to remote machines...

  3. #3
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    Default Re: Dolphin - previews

    Have you checked Dolphin preview settings?

    Settings > Configure Dolphin > Previews tab ...
    openSUSE Leap 15.4; KDE Plasma 5

  4. #4

    Default Re: Dolphin - previews

    Quote Originally Posted by deano_ferrari View Post
    Have you checked Dolphin preview settings?

    Settings > Configure Dolphin > Previews tab ...
    Yep - everything correct in there.

  5. #5
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    Default Re: Dolphin - previews

    I don't normally have previews enabled for remote folders, but I turned that on just now, and the behaviour for a remote samba share is as you describe. Why do you think this is unexpected? (I'm using openSUSE Leap 15.3 BTW.)
    openSUSE Leap 15.4; KDE Plasma 5

  6. #6

    Default Re: Dolphin - previews

    Quote Originally Posted by deano_ferrari View Post
    I don't normally have previews enabled for remote folders, but I turned that on just now, and the behaviour for a remote samba share is as you describe. Why do you think this is unexpected? (I'm using openSUSE Leap 15.3 BTW.)
    It's unexpected to me becuase in Leap 15.3 it did not do that (for me at least). Regenerating the thumbnails on each access to the folder takes ages (particularly for large MP4 files etc.) and I don't see why they are not cached?

  7. #7
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    Default Re: Dolphin - previews

    Quote Originally Posted by KermitXYZ View Post
    It's unexpected to me becuase in Leap 15.3 it did not do that (for me at least). Regenerating the thumbnails on each access to the folder takes ages (particularly for large MP4 files etc.) and I don't see why they are not cached?
    It's always been like that when browsing a remote share as far as I can remember. Hence being able to limit generation of thumbnail previews for files above a given size. Caching could quickly become enormous (and stale) depending on the size and number of remote shares present in some environments.
    openSUSE Leap 15.4; KDE Plasma 5

  8. #8

    Default Re: Dolphin - previews

    Quote Originally Posted by deano_ferrari View Post
    Caching could quickly become enormous (and stale) depending on the size and number of remote shares present in some environments.
    But equally it might not. Be nice to have the choice.

    However, I have made progress. The slow speed is down to the entire file being copied to /tmp before the preview is generated.

    A workaround is to mount the remote share locally. This way, the thumbnails are generated almost immediately and are cached. Also, the file is not transferred to the /tmp directory.

  9. #9
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    Default Re: Dolphin - previews

    Quote Originally Posted by KermitXYZ View Post
    A workaround is to mount the remote share locally. This way, the thumbnails are generated almost immediately and are cached. Also, the file is not transferred to the /tmp directory.
    Yep, I was going to suggest that you mount the share, then it is treated as any other local file system.
    openSUSE Leap 15.4; KDE Plasma 5

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