[plasmashell] [Bug 505301] New: ksplashqml sometimes blacks out the primary monitor on login

[Luca Saalfeld]

https://bugs.kde.org/show_bug.cgi?id=505301

            Bug ID: 505301
           Summary: ksplashqml sometimes blacks out the primary monitor on
                    login
    Classification: Plasma
           Product: plasmashell
      Version First 6.3.5
       Reported In:
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Theme - Breeze
          Assignee: plasma-bugs at kde.org
          Reporter: luluklzde at gmail.com
                CC: visual-design at kde.org
  Target Milestone: 1.0

SUMMARY
Sometimes when I log in my primary monitor is completely black. I found out it
was kspashqml, which was stuck at 100% CPU core usage.
I can still interact with the underlying desktop and see it with the task
switcher, just not see anything in "normal" mode.

STEPS TO REPRODUCE
1. Log in.
Sometimes it blocks, sometimes it doesn't. It's completely unpredictable.

OBSERVED RESULT
The primary monitor is black for a few seconds after login.

EXPECTED RESULT
The splash screen disappear, like it does on the other monitor.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.14.0
Qt Version: 6.9.1
Kernel Version: 6.15.1-3-cachyos (64-bit)
Graphics Platform: Wayland

ADDITIONAL INFORMATION
I can't figure out a way to reproduce it in a constant manner. Sometimes it's
every login, sometimes it doesn't happen for a month. It's completely
arbitrary.
It's also impossible to tell if a new user is affected as well. Does it work
there, or is it just luck? I can't tell, because of the randomness of the bug.

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