Re: No pictures shown with Digikam 9.1.0 and Kubuntu 25.10

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Hi,

Try to disable the Color Management in digiKam setup dialog.

Gilles Caulier

Le ven. 13 mars 2026 =C3=A0 10:29, Jens Schwarzhaupt <[email protected]> a
=C3=A9crit :

> 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 =3D=3D 0, type: 2
> QPainter::begin: Paint device returned engine =3D=3D 0, type: 2
>
> At the moment I don't even know whether this is a fault message or not bu=
t
> 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 discus=
s
> such topics?
>
> What I already did, was to build V9.0.0 with the tag option of kde-builde=
r
> but
> the result was the same.
>
> Looking forward for your replies!
>
> Regards,
>
> Jens
>
>
>
>
>

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<div dir=3D"ltr"><div>Hi,</div><div><br></div><div>Try to disable the Color=
 Management in digiKam setup dialog.</div><div><br></div><div>Gilles Caulie=
r</div></div><br><div class=3D"gmail_quote gmail_quote_container"><div dir=
=3D"ltr" class=3D"gmail_attr">Le=C2=A0ven. 13 mars 2026 =C3=A0=C2=A010:29, =
Jens Schwarzhaupt &lt;<a href=3D"mailto:[email protected]">blackhead2@gmx.=
net</a>&gt; a =C3=A9crit=C2=A0:<br></div><blockquote class=3D"gmail_quote" =
style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pa=
dding-left:1ex">Dear Digikam Developers :),<br>
<br>
I recently switched from Windows to Linux and as photography is one of my <=
br>
hobbies, I decided to contribute to Digikam even if I&#39;ve never develope=
d an <br>
application SW before. At least I have some ideas coming from a very powerf=
ul <br>
windows tool :)<br>
<br>
Currenty I&#39;m working as a systems engineer for product safety for power=
 <br>
electronics but in the past I also worked as a SW-developer for embedded <b=
r>
systems where I mainly used C for around 5 years. Besides of that I do <br>
scripting (perl, python, java) here and there and a some smart home stuff i=
f <br>
there is some free time between family and work. So I think I could be able=
 to <br>
contribute :)<br>
<br>
To start developing I set up a clean install of Kubuntu 25.10, installed QT=
 <br>
6.10.2 via the QT installer incl. dependencies and finally used kde-builder=
 to <br>
build the latest version of Digikam. And - suprise - Digikam 9.1.0 is runni=
ng. <br>
But unfortunately I can not open/show pictures.<br>
<br>
I added a picture folder in my home directory as a new collection and the <=
br>
preview pictures are shown, I can tag them, filter, search... all is workin=
g. <br>
But if I try to open a picture (e.g. double click), I only get a message in=
 <br>
the main window &quot;Bild kann nicht geladen werden&quot; (&quot;Can not l=
oad picture&quot;). <br>
<br>
The terminal says the following if I try to open a picture (the Epson is my=
 <br>
printer that is automatically detected by Kubuntu):<br>
digikam.dimg: ICM Wayland: the device is not a screen: &quot;/org/freedeskt=
op/<br>
ColorManager/devices/cups_EPSON_ET_8550_Series&quot;<br>
QPainter::begin: Paint device returned engine =3D=3D 0, type: 2<br>
QPainter::begin: Paint device returned engine =3D=3D 0, type: 2<br>
<br>
At the moment I don&#39;t even know whether this is a fault message or not =
but I <br>
assume that showing pictures should work with V 9.1.0 even if it&#39;s in <=
br>
development. At least I would prefer to start with a baseline for which the=
 <br>
core functions are working...<br>
<br>
Can you give me some advice where I coud start troubleshooting? Is it Kubun=
tu? <br>
Is it the build with kde-builder? Is there some better platform to discuss =
<br>
such topics?<br>
<br>
What I already did, was to build V9.0.0 with the tag option of kde-builder =
but <br>
the result was the same.<br>
<br>
Looking forward for your replies! <br>
<br>
Regards,<br>
<br>
Jens<br>
<br>
<br>
<br>
<br>
</blockquote></div>

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