Digikam unable to find files on ubuntu

[Alan Johnson]

Hello,

Digikam seems to have stopped being able to find my files on my computer. I'm using Ubuntu 25.04 now, although it also happened under 24.10, and versions 8.5 and 8.6.

It seems to be missing the Qt Platform plugin "wayland" per the debug messages.

./digiKam-8.6.0-Qt6-x86-64.appimage export QT_LOGGING_RULES="digikam*=true"
-- digiKam Linux AppImage Bundle
-- Use 'help' as CLI argument to know all available options for digiKam application.
-- Notes: to integrate this bundle to your desktop, use AppImageLauncher.
-- to enable all debug messages on the console, use 'export QT_LOGGING_RULES="digikam*=true"'.
-- to extract the bundle contents locally, use option '--appimage-extract' on the command line.
-- Detected host Linux Ubuntu-64-25.04
-- AppImage mounted directory: /tmp/.mount_digiKahD805p
Preloading skipped for libudev.so.0
Preloading /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0
Preloading skipped for libcrypto.so.1.1
Preloading skipped for libssl.so.1.1
Preloading skipped for libnss3.so
Preloading /usr/lib/x86_64-linux-gnu/libnssutil3.so
Preloading skipped for libsmime3.so
Preloading /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0
Preloading skipped for libgnutls.so.30
Preloading /usr/lib/x86_64-linux-gnu/libnettle.so.8
-- Preloading shared libs: :/usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0:/usr/lib/x86_64-linux-gnu/libnssutil3.so:/usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0:/usr/lib/x86_64-linux-gnu/libnettle.so.8
unknown: Could not find the Qt platform plugin "wayland" in ""
unknown: Failed to acquire watch file descriptor Permission denied
unknown: QSvgHandler: Image filename is empty
unknown: QSvgHandler: Image filename is empty
unknown: QSvgHandler: Image filename is empty
unknown: QSvgHandler: Image filename is empty
Digikam::CollectionManager::addLocation: Unable to identify a path with Solid. Adding the location with path only.
MESA-LOADER: failed to open iris: ././/lib/dri/iris_dri.so: cannot open shared object file: No such file or directory (search paths ././/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:././/lib/dri, suffix _dri)
MESA-LOADER: failed to open zink: ././/lib/dri/zink_dri.so: cannot open shared object file: No such file or directory (search paths ././/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:././/lib/dri, suffix _dri)
MESA-LOADER: failed to open kms_swrast: ././/lib/dri/kms_swrast_dri.so: cannot open shared object file: No such file or directory (search paths ././/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:././/lib/dri, suffix _dri)
MESA-LOADER: failed to open swrast: ././/lib/dri/swrast_dri.so: cannot open shared object file: No such file or directory (search paths ././/lib/x86_64-linux-gnu/dri:\$${ORIGIN}/dri:././/lib/dri, suffix _dri)
unknown: Unhandled container to remove : Digikam::DigikamApp
corrupted double-linked list
/tmp/.mount_digiKahD805p/AppRun: line 261: 325616 Aborted (core dumped) digikam $@

sudo aptitude reinstall qt6-wayland
The following packages will be REINSTALLED:
qt6-wayland
0 packages upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
Need to get 200 kB of archives. After unpacking 0 B will be used.
Get: 1 http://archive.ubuntu.com/ubuntu plucky/universe amd64 qt6-wayland amd64 6.8.3-0ubuntu1 [200 kB]
Fetched 200 kB in 1s (194 kB/s)
N: Ignoring file 'dropbox.list.migrate' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'mattermost_stable.list.migrate' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'waydroid.list.migrate' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'signal.list.migrate' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
N: Ignoring file 'vivaldi.list.migrate' in directory '/etc/apt/sources.list.d/' as it has an invalid filename extension
(Reading database ... 439865 files and directories currently installed.)
Preparing to unpack .../qt6-wayland_6.8.3-0ubuntu1_amd64.deb ...
Unpacking qt6-wayland:amd64 (6.8.3-0ubuntu1) over (6.8.3-0ubuntu1) ...
Setting up qt6-wayland:amd64 (6.8.3-0ubuntu1) ...
Processing triggers for libc-bin (2.41-6ubuntu1) ...

cat /var/log/syslog | grep Digikam
2025-05-17T12:25:40.580228-04:00 fafnir appimagekit_7f4da5c3c5e15622bb9a1247619285ba-digiKam.desktop[323949]: #033[34munknown#033[0m: Unhandled container to remove : Digikam::DigikamApp
2025-05-17T12:26:14.999249-04:00 fafnir digiKam-8.6.0-Qt6-x86-64.appimage[324472]: #033[34mDigikam::CollectionManager::addLocation#033[0m: Unable to identify a path with Solid. Adding the location with path only.
2025-05-17T12:26:28.210871-04:00 fafnir digiKam-8.6.0-Qt6-x86-64.appimage[324472]: #033[34munknown#033[0m: Unhandled container to remove : Digikam::DigikamApp
2025-05-17T12:33:33.454208-04:00 fafnir digiKam-8.6.0-Qt6-x86-64.appimage[326765]: #033[34mDigikam::CollectionManager::addLocation#033[0m: Unable to identify a path with Solid. Adding the location with path only.
2025-05-17T12:33:41.000858-04:00 fafnir digiKam-8.6.0-Qt6-x86-64.appimage[326765]: #033[34munknown#033[0m: Unhandled container to remove : Digikam::DigikamApp

I attempted to reinstall the qt6-wayland plugin, but the issues persists.

Please advise any actions I should take or if more information is needed. T

Thank you,

Alan Johnson

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