https://bugs.kde.org/show_bug.cgi?id=493974

            Bug ID: 493974
           Summary: When sleep is manually invoked on opened laptop
                    connected to DP monitor, both laptop and monitor
                    immediately wake up again
    Classification: Plasma
           Product: Powerdevil
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Keywords: multiscreen
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: plasma-b...@kde.org
          Reporter: n...@kde.org
                CC: natalie_clar...@yahoo.de
  Target Milestone: ---

Current git master everything built on top of Fedora KDE 40. Qt 6.7.2, Kernel
6.10.11.


STEPS TO REPRODUCE
1. Have a laptop plugged into a DisplayPort monitor. In my case it's this one:
https://www.bhphotovideo.com/c/product/1718042-REG/hp_4q8n9aa_aba_24_qhd_90hz_hdr400.html,
and the laptop gets power from the DisplayPort cable going to the monitor.
2. With the laptop's lid open and an active session, click Kickoff > Sleep


OBSERVED RESULT
Laptop goes to sleep and screen turns black, then in a second or two, the
laptop wakes up and displays the lock screen. The external monitor turns back
on, too.


EXPECTED RESULT
Both the laptop and external monitor remain asleep until woken up.

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