https://bugs.kde.org/show_bug.cgi?id=482332

            Bug ID: 482332
           Summary: Plasma desktop and window decorations disappears if
                    display is turned off and then back on again while
                    Valve Index VR headset is plugged in
    Classification: Plasma
           Product: kwin
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: core
          Assignee: kwin-bugs-n...@kde.org
          Reporter: ciaran.gilles...@gmail.com
  Target Milestone: ---

SUMMARY
With the Valve Index VR headset plugged into one display port and my primary
monitor plugged into an HDMI port I run into an issue if my primary display is
turned off and then on again. This only occurs while the Valve Index VR headset
it plugged into the display port. This happens if the display is manually
turned off and then on, or if the monitor is turned off because of power
saving. Once the monitor is turned back on all the application windows that
were visible and running are still there how ever the window decorations and
desktop are gone. Restarting the display-manager service does return me to the
log in screen but logging in end up with a still broken plasma desktop with no
desktop background, window decoration or panels.


STEPS TO REPRODUCE
1.  Have a display plugged into an HDMI port and Valve Index plugged into a
display port
2. Turn off the primary display by pressing the power button, or having the
power manager turn the display off
3. Turn the primary display back on by either pressing the power button, or
waking up the system

OBSERVED RESULT
Desktop is completely black and all window decorations and panels are missing 

EXPECTED RESULT
Desktop continues to work when display is turned back on

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE neon 6.0 / Plasma 6.0
(available in About System)
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

ADDITIONAL INFORMATION
AMD Ryzen 7 5700X
AMD Radeon RX6700 XT

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