[kio-extras] [Bug 392706] Image preview predictably fails for half-uploaded images but then doesn't address the problem later

[Bug Janitor Service]

https://bugs.kde.org/show_bug.cgi?id=392706

Bug Janitor Service  changed:

   What|Removed |Added

 Status|NEEDSINFO   |RESOLVED
 Resolution|WAITINGFORINFO  |WORKSFORME

--- Comment #4 from Bug Janitor Service  ---
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!

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[kio-extras] [Bug 392706] Image preview predictably fails for half-uploaded images but then doesn't address the problem later

[Bug Janitor Service]

https://bugs.kde.org/show_bug.cgi?id=392706

--- Comment #3 from Bug Janitor Service  ---
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!

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[kio-extras] [Bug 392706] Image preview predictably fails for half-uploaded images but then doesn't address the problem later

[Justin Zobel]

https://bugs.kde.org/show_bug.cgi?id=392706

Justin Zobel  changed:

   What|Removed |Added

 Status|REPORTED|NEEDSINFO
 Resolution|--- |WAITINGFORINFO

--- Comment #2 from Justin Zobel  ---
Thank you for reporting this issue in KDE software. As it has been a while
since this issue was reported, can we please ask you to see if you can
reproduce the issue with a recent software version?

If you can reproduce the issue, please change the status to "REPORTED" when
replying. Thank you!

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[kio-extras] [Bug 392706] Image preview predictably fails for half-uploaded images but then doesn't address the problem later

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=392706

Nate Graham  changed:

   What|Removed |Added

 CC||n...@kde.org
  Component|default |Thumbnails and previews

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[kio-extras] [Bug 392706] Image preview predictably fails for half-uploaded images but then doesn't address the problem later

[Dr . Chapatin]

https://bugs.kde.org/show_bug.cgi?id=392706

Dr. Chapatin  changed:

   What|Removed |Added

 CC||bugsefor...@gmx.com

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[kio-extras] [Bug 392706] Image preview predictably fails for half-uploaded images but then doesn't address the problem later

[Simon Andric]

https://bugs.kde.org/show_bug.cgi?id=392706

Simon Andric  changed:

   What|Removed |Added

 CC||simonandr...@gmail.com

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[kio-extras] [Bug 392706] Image preview predictably fails for half-uploaded images but then doesn't address the problem later

[Rog131]

https://bugs.kde.org/show_bug.cgi?id=392706

Rog131  changed:

   What|Removed |Added

 CC||samrog...@hotmail.com
  Component|view-engine: general|default
   Assignee|dolphin-bugs-n...@kde.org   |plasma-b...@kde.org
Product|dolphin |kio-extras

--- Comment #1 from Rog131  ---
(In reply to David Tonhofer from comment #0)
> Created attachment 111812 [details]
> Example of failed previews
> 
> If you upload an jpg image and Dolphin grabs it to generate a preview, it
> may stay "half gray" as the preview fails mid-way.
> 
> This is not so bad, but Dolphin should be back later for a re-take on the
> preview - this does not happen (how do into explicitly telling Dolphin to
> redo the previews?)
> 
> Fixing this would mean keeping a database about temporarily failed previews
> somewhere (a portable SQL database or something)

The Dolphin is using KDE KIO to create and manage the thumbnails. Resetting the
product to the kio-extras as the jpg thumbnailer is part of the kio-extras.

The KDE is following the Freedesktop standards and specifications. There is
Thumbnail Managing Standard:
https://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html
. The standard has 'Thumbnail Creation Failures':
https://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html#FAILURES.
I'm not sure if the KDE has implement it ?

To redo the thumbnails the user can clean the thumbnail cache:

- Gwenview has this in the advanced settings.
- Sweeper ( https://www.kde.org/applications/utilities/sweeper/ ) has this
option - needs Git commit 9c9586579f6f0dc7c0db73cf7683e94ab61526d7 -
https://bugs.kde.org/show_bug.cgi?id=361482#c12

There is also an option to make a servicemenu to remove single thumbnails.

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