Debian Bug report logs - #997873
gwenview: thumbnails not updated; sometimes thumbnails point at deleted image

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Message #5 received at [email protected] (full text, mbox, reply):

From: "Edward C. Jones" <[email protected]>

To: Debian Bug Tracking System <[email protected]>

Subject: gwenview: thumbnails not updated; sometimes thumbnails point at deleted image

Date: Tue, 26 Oct 2021 08:47:05 -0400

Package: gwenview
Version: 4:20.12.3-2
Severity: normal
X-Debbugs-Cc: [email protected]

If I replace an image with another image with the same name, the thumnail is
not updated.  This is a well-known problem.  A work-around is to empty the KDE
thumbnail directory.

If I replace an image with another image with the same name, when I click on a
thumbnail, Gwenview displays the deleted image. It seems that Gwenview is
maintaining
a pointer to a deleted file.

-- System Information:
Debian Release: 11.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500,
'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.10.0-9-amd64 (SMP w/6 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not
set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gwenview depends on:
ii  kinit                  5.78.0-2
ii  kio                    5.78.0-5
ii  libc6                  2.31-13+deb11u2
ii  libcfitsio9            3.490-3
ii  libexiv2-27            0.27.3-3+deb11u1
ii  libgcc-s1              10.2.1-6
ii  libjpeg62-turbo        1:2.0.6-4
ii  libkf5activities5      5.78.0-2
ii  libkf5baloo5           5.78.0-3
ii  libkf5completion5      5.78.0-3
ii  libkf5configcore5      5.78.0-4
ii  libkf5configgui5       5.78.0-4
ii  libkf5configwidgets5   5.78.0-2
ii  libkf5coreaddons5      5.78.0-4
ii  libkf5filemetadata3    5.78.0-2
ii  libkf5i18n5            5.78.0-2
ii  libkf5iconthemes5      5.78.0-2
ii  libkf5itemmodels5      5.78.0-2
ii  libkf5itemviews5       5.78.0-2
ii  libkf5jobwidgets5      5.78.0-2
ii  libkf5kdcraw5          20.12.0-1
ii  libkf5kiocore5         5.78.0-5
ii  libkf5kiofilewidgets5  5.78.0-5
ii  libkf5kiowidgets5      5.78.0-5
ii  libkf5kipi32.0.0       4:20.12.1-1
ii  libkf5notifications5   5.78.0-2
ii  libkf5parts5           5.78.0-3
ii  libkf5purpose-bin      5.78.0-2
ii  libkf5purpose5         5.78.0-2
ii  libkf5service-bin      5.78.0-2
ii  libkf5service5         5.78.0-2
ii  libkf5solid5           5.78.0-2
ii  libkf5widgetsaddons5   5.78.0-2
ii  libkf5xmlgui5          5.78.0-2
ii  liblcms2-2             2.12~rc1-2
ii  libphonon4qt5-4        4:4.11.1-4
ii  libpng16-16            1.6.37-3
ii  libqt5core5a           5.15.2+dfsg-9
ii  libqt5dbus5            5.15.2+dfsg-9
ii  libqt5gui5             5.15.2+dfsg-9
ii  libqt5printsupport5    5.15.2+dfsg-9
ii  libqt5svg5             5.15.2-3
ii  libqt5widgets5         5.15.2+dfsg-9
ii  libqt5x11extras5       5.15.2-2
ii  libstdc++6             10.2.1-6
ii  libtiff5               4.2.0-1
ii  libx11-6               2:1.7.2-1
ii  perl                   5.32.1-4+deb11u2
ii  phonon4qt5             4:4.11.1-4

Versions of packages gwenview recommends:
ii  kamera                     4:20.12.0-1
ii  kio-extras                 4:20.12.2-1
ii  qt5-image-formats-plugins  5.15.2-2

gwenview suggests no packages.

Message #10 received at [email protected] (full text, mbox, reply):

From: Norbert Preining <[email protected]>

To: "Edward C. Jones" <[email protected]>, [email protected]

Subject: Re: Bug#997873: gwenview: thumbnails not updated; sometimes thumbnails point at deleted image

Date: Wed, 27 Oct 2021 08:38:38 +0900

Hi Edward,

On Tue, 26 Oct 2021, Edward C. Jones wrote:
> If I replace an image with another image with the same name, the thumnail is
> not updated.  This is a well-known problem.  A work-around is to empty the KDE
> thumbnail directory.
> 
> If I replace an image with another image with the same name, when I click on a
> thumbnail, Gwenview displays the deleted image. It seems that Gwenview is
> maintaining
> a pointer to a deleted file.

I cannot reproduce *any* of the two behaviours when terminating gwenview
inbetween:

cd $(mktemp -d)
cp ~/photo1.jpg test.jpg
gwenview .
	# shows the thumbnail of photo1.jpg, and opens test.jpg with the
	# content of photo1.jpg
# quit gwenview
cp ~/photo2.jpg test.jpg
gwenview .
	# shows the thumbnail of photo2.jpg, and opens test.jpg with the
	# content of photo2.jpg


OTOH, when I keep gwenview running I see a different bevhaviour:
- thumbnail is properly updated
- actual photo is not update (still shows photo1.jpg!)

So it seems the thumbnail issue is fixed, but the display of the actual
photo not.

Thanks

Norbert

--
PREINING Norbert                              https://www.preining.info
Fujitsu Research  +  IFMGA Guide  +  TU Wien  +  TeX Live  + Debian Dev
GPG: 0x860CDC13   fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13

Message #15 received at [email protected] (full text, mbox, reply):

From: Norbert Preining <[email protected]>

To: [email protected], [email protected]

Subject: Re: Bug#997873: gwenview: thumbnails not updated; sometimes thumbnails point at deleted image

Date: Wed, 27 Oct 2021 08:56:35 +0900

forwarded 997873 https://bugs.kde.org/show_bug.cgi?id=444461
thanks

I have forwarded it to the KDE bug tracker.

Best

Norbert

--
PREINING Norbert                              https://www.preining.info
Fujitsu Research  +  IFMGA Guide  +  TU Wien  +  TeX Live  + Debian Dev
GPG: 0x860CDC13   fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13

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