[kde] [Bug 448173] New: One or both dual monitors powers off after login to Wayland KDE

[SP]

https://bugs.kde.org/show_bug.cgi?id=448173

            Bug ID: 448173
           Summary: One or both dual monitors powers off after login to
                    Wayland KDE
           Product: kde
           Version: unspecified
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Keywords: accessibility, multiscreen, wayland
          Severity: grave
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: scp.stjohn at gmail.com
  Target Milestone: ---

STEPS TO REPRODUCE
1. Boot computer
2.  Arrive at SDDM login screens with both monitors working
3. Login to KDE

OBSERVED RESULT
Erratically one or both monitors immediately powers off on login to Wayland KDE
from SDDM.  It is normally one screen but occasionally both.  This is remedied
with a reboot though it sometimes takes a few reboots before both both screens
appear during login to KDE Plasma.

EXPECTED RESULT
Monitors should not power off during login to Wayland KDE


SOFTWARE/OS VERSIONS

Linux Kernel: 5.15.12-200.fc35.x86_64
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.89.0
Qt Version: 5.15.2
Graphics Platform: Wayland

ADDITIONAL INFORMATION

This problem occurs on two computers with the same configuration.  One computer
uses Asus monitors and the other Samsung monitors.  (So this prolem is not
monitor specific.)
Graphics Card AMD/ATI Tonga Pro Radeon R9 38 series
Kernel module amdgpu
OpenGL Version 4.6 Mesa 21.3.3
Processors 8 x Intel Core i7-3770 CPU @ 3.40FHz
Memory 16GB

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