[kde] [Bug 490823] New: In Plasma 6 no SDDM background theme can be set as login background

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=490823

            Bug ID: 490823
           Summary: In Plasma 6 no SDDM background theme can be set as
                    login background
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Manjaro
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: alenertz at mailbox.org
  Target Milestone: ---

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SUMMARY


STEPS TO REPRODUCE
1. Choose a SDDM theme in Systemsettings > Colors & Design > SDDM login screen
2. Apply it and reboot
3. Reaching the Login screen no SDDM theme is displayed, only the default KDE
screen

OBSERVED RESULT

No chosen SDDM theme in Login screen. Some error messages appear in the right
lower screen. These are:

' file:///usr/share/sddm/themes/MacVentura-Dark/Main.qml:119:9: Type
WallpaperFader unavailable'
'
file:///usr/share/sddm/themes/MacVentura-Dark/components/WallpaperFader.qml:13:1:
module "org.kde.plasma.private.sessions" is not installed

Note: It affects not only MacVentura-Dark, but nearly all SDDM themes.
MacVentura-Dark is only an example to show. 


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Plasma 6
(available in About System)
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION

This bug (or not) is present in Plasma 6 since the first release of Plasma 6 in
February 2024. At the beginning only a few sddm themes could be displayed as
login background. I've tried all possible. An "org.kde.plasma.private.sessions"
as well as other packages found under "import" in WallpaperFader.qml cannot be
found in the Manjaro Repos or Arch Repos. I installed similar packages, but
that didn't help either. Kdeplasma-addons or sddm-kcm are installed in Manjaro.
What I detected in "WallpaperFader.qml" is, that the packages under "import"
could be Plasma 5 packages and that these packages have not been ported to
Plasma 6 yet. Perhaps that is the cause of the issue.

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