https://bugs.kde.org/show_bug.cgi?id=469115

            Bug ID: 469115
           Summary: Notification positioning becomes "lost" if the primary
                    monitor switches off temporarily
    Classification: Plasma
           Product: plasmashell
           Version: 5.27.4
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Notifications
          Assignee: plasma-b...@kde.org
          Reporter: rocketra...@gmail.com
                CC: k...@privat.broulik.de
  Target Milestone: 1.0

SUMMARY

I have a multi-monitor display with 3 monitors.

My primary monitor has two HDMI inputs from two different computers -- if I
switch the monitor to the other input, and then switch it back to the original
input, notifications and hover views no longer show up in the correct
positions. 

Examples:

* Hover over a task bar window, the window preview shows up on the secondary
monitor (to the left of the primary), bottom right.
* Hover over the audio plasmashell widget in the task bar, the volume/input
summary shows on the secondary monitor (to the left of the primary), bottom
right.
* Click on the audio plasmashell widget in the task bar, the audio volume
dialog box shows up on the primary monitor, bottom left.
* Notifications show up just below the middle of the primary screen.

This weird state can be manually reset by changing the primary in display
priorities in the Display Settings to another monitor, applying those changes,
and then back to the way things were.

STEPS TO REPRODUCE
1. Switch monitor to secondary input, and then back. It may work by turning off
the monitor as well -- honestly, I haven't tried because I am scared Plasma
will mess up my desktop layout :-)
2. Hover over anything in the task bar.

OBSERVED RESULT
Hover views and other things are placed in the wrong position / sometimes on
the wrong monitor.

EXPECTED RESULT
Correct placement.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 38
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.9
Kernel Version: 6.2.12-300.fc38.x86_64 (64-bit)
Graphics Platform: X11
Graphics Processor: AMD Radeon RX 6600 XT

ADDITIONAL INFORMATION

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