Bug 493974 - When sleep is manually invoked on opened laptop connected to DP monitor, both laptop and monitor immediately wake up again
Summary: When sleep is manually invoked on opened laptop connected to DP monitor, both...
Status: CONFIRMED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Power management & brightness (show other bugs)
Version: 6.2.4
Platform: Other Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords: multiscreen
: 500878 (view as bug list)
Depends on:
Blocks:
 
Reported: 2024-10-02 16:02 UTC by Nate Graham
Modified: 2025-03-06 21:53 UTC (History)
4 users (show)

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Description Nate Graham 2024-10-02 16:02:56 UTC 
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.
Comment 1 Nate Graham 2025-03-06 21:52:56 UTC 
*** Bug 500878 has been marked as a duplicate of this bug. ***