Bug 468840

Summary: Running games on full screen causes secondary monitor to go black until cursor is moved to it
Product: [Plasma] kwin Reporter: Yemi <yemster1994>
Component: multi-screenAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: nate
Priority: NOR    
Version First Reported In: 5.27.4   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Screen recording of the bug

Description Yemi 2023-04-22 22:12:17 UTC 
SUMMARY

Whenever opening Steam games in fullscreen with X11, seconday monitor goes black until mousing over it and windows on that monitor are transparent until clicking on the application on the taskbar to make them active again. 

STEPS TO REPRODUCE
1. Add 2nd Display to setup
2. Start Plasma with X11
3. Open game in full screen

OBSERVED RESULT

Second display goes black until mousing over it

EXPECTED RESULT

Game opens and second display continues to operate normally

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 38 KDE 5.27.4
(available in About System)
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.9

ADDITIONAL INFORMATION

This is a duplicate of a closed bug: https://bugs.kde.org/show_bug.cgi?id=455673  

There's a possibility that is nothing is going on the second monitor (i.e. no application, just the desktop) this doesn't occur but have not confirmed this.
Comment 1 Yemi 2023-04-22 22:18:37 UTC 
Created attachment 158344 [details]
Screen recording of the bug
Comment 2 Nate Graham 2023-04-24 18:51:30 UTC 

*** This bug has been marked as a duplicate of bug 455673 ***