https://bugs.kde.org/show_bug.cgi?id=412892

            Bug ID: 412892
           Summary: plasmashell hangs and eat 100% of CPU, probably
                    related to screen management.
           Product: plasmashell
           Version: 5.16.5
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Multi-screen support
          Assignee: aleix...@kde.org
          Reporter: quelque_...@yahoo.fr
                CC: plasma-b...@kde.org
  Target Milestone: 1.0

Created attachment 123169
  --> https://bugs.kde.org/attachment.cgi?id=123169&action=edit
gdb trace of when it hangs.

SUMMARY
Hanging of plasmashell. It seems related to an external monitor on a laptop.

STEPS TO REPRODUCE
1. restart the computer, with two screen
2. Wait and see plasmashell eating 100% of the CPU while not showing up.


EXPECTED RESULT
Some plasmashell features, such as the taskbar, should appear.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Archlinux
(available in About System)
KDE Plasma Version: 5.16.5-1


The gdb trace is attached to this ticket.

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