Bug#1026426: plasma-workspace: No default wallpaper with black desktop, and ksplashqml hides desktop until hard time limit of 30 seconds is reached

[Bernhard Übelacker <bernhardu@mailbox.org>]

Dear Maintainer,
I retested this inside a minimal Bookworm/testing VM now because
the last plasma package updates seem to have settled a bit.
Unfortunately the black background
and the 30 seconds splash are still visible.


At least in this bug report at least the black
default wallpaper gets described:

   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1026070#17



After an affected new user configures a wallpaper the
previously reported message from main.qml is gone,
but the 30 second splash is also still there.


To make the 30 second splash issue better visible I created
this upstream merge request:

   https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/2450/diffs

This one applied to the Debian package showed that
the last step "desktop" is missing.

See this for all needed steps:
   https://invent.kde.org/plasma/plasma-workspace/-/blob/master/ksplash/ksplashqml/splashapp.cpp#L36


Kind regards,
Bernhard