No pictures shown with Digikam 9.1.0 and Kubuntu 25.10

[Gilles Caulier]

Hi,

Try to disable the Color Management in digiKam setup dialog.

Gilles Caulier

Le ven. 13 mars 2026 à 10:29, Jens Schwarzhaupt <blackhead2 at gmx.net> a
écrit :

> Dear Digikam Developers :),
>
> I recently switched from Windows to Linux and as photography is one of my
> hobbies, I decided to contribute to Digikam even if I've never developed
> an
> application SW before. At least I have some ideas coming from a very
> powerful
> windows tool :)
>
> Currenty I'm working as a systems engineer for product safety for power
> electronics but in the past I also worked as a SW-developer for embedded
> systems where I mainly used C for around 5 years. Besides of that I do
> scripting (perl, python, java) here and there and a some smart home stuff
> if
> there is some free time between family and work. So I think I could be
> able to
> contribute :)
>
> To start developing I set up a clean install of Kubuntu 25.10, installed
> QT
> 6.10.2 via the QT installer incl. dependencies and finally used
> kde-builder to
> build the latest version of Digikam. And - suprise - Digikam 9.1.0 is
> running.
> But unfortunately I can not open/show pictures.
>
> I added a picture folder in my home directory as a new collection and the
> preview pictures are shown, I can tag them, filter, search... all is
> working.
> But if I try to open a picture (e.g. double click), I only get a message
> in
> the main window "Bild kann nicht geladen werden" ("Can not load picture").
>
> The terminal says the following if I try to open a picture (the Epson is
> my
> printer that is automatically detected by Kubuntu):
> digikam.dimg: ICM Wayland: the device is not a screen: "/org/freedesktop/
> ColorManager/devices/cups_EPSON_ET_8550_Series"
> QPainter::begin: Paint device returned engine == 0, type: 2
> QPainter::begin: Paint device returned engine == 0, type: 2
>
> At the moment I don't even know whether this is a fault message or not but
> I
> assume that showing pictures should work with V 9.1.0 even if it's in
> development. At least I would prefer to start with a baseline for which
> the
> core functions are working...
>
> Can you give me some advice where I coud start troubleshooting? Is it
> Kubuntu?
> Is it the build with kde-builder? Is there some better platform to discuss
> such topics?
>
> What I already did, was to build V9.0.0 with the tag option of kde-builder
> but
> the result was the same.
>
> Looking forward for your replies!
>
> Regards,
>
> Jens
>
>
>
>
>
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