https://bugs.kde.org/show_bug.cgi?id=406019

            Bug ID: 406019
           Summary: Corrupted image thumbnail on some pictures
           Product: digikam
           Version: 6.1.0
          Platform: Appimage
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Thumbs-IconView
          Assignee: digikam-bugs-n...@kde.org
          Reporter: iwannaber...@gmail.com
  Target Milestone: ---

Created attachment 119142
  --> https://bugs.kde.org/attachment.cgi?id=119142&action=edit
Corrupted thumbnail on miniature view

SUMMARY

Some pictures show a corrupted thumbnail. Maybe one every 100 or less. They all
look like a video thumbnail with TV static noise in it, although they all are a
bit different from each other. See attached picture as a sample. 

These pictures can be correctly opened in digikam and other picture viewers,
and all the metadata seem to be correct, there are no signs of corruption
anywhere.

Re-reading the metadata from file to recreate the thumbnail does nothing.
Adding and removing a tag from the metadata seems to work in some cases, but
not others, to restore the original thumbnail.

I am in a high-latency network, so I am suspecting that these files were edited
at some point and due to the high-latency there was some kind of problem and
the thumbnail could not be generated correctly. But that wouldn't explain why
re-reading the metadata does not restore it.

I repeatedly get this error on the console, but I don't know if it has anything
to do with it, it appears regardless of the image:

Cannot open workspace color profile
"/tmp/.mount_digikasDTsw0/usr/share/digikam/profiles/srgb-d65.icm"

I am using digikam-6.1.0-git-20190325T162715.appimage in Ubuntu 18.04 with
Gnome.

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