Bug 442532

Summary: Overview only rendered on a single display when displays are mirrored
Product: [Plasma] kwin Reporter: Arjen Hiemstra <ahiemstra>
Component: effects-overviewAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED WORKSFORME    
Severity: normal CC: admin, nate
Priority: NOR    
Version: 5.22.90   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=447065
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Arjen Hiemstra 2021-09-16 14:47:05 UTC 
SUMMARY
With two displays setup to be mirrored, the overview effect is only rendered on one of the two displays. The other display will display an inactive search field and a gray background, that flickers while you move the mouse around.

STEPS TO REPRODUCE
1. Have two displays and set them up to be mirrored, in my case my laptop display becomes a mirror of the external display.
2. Activate the overview effect.

OBSERVED RESULT
Overview only shows up on one display, in my case the laptop display. The other display renders a flickering gray rectangle with a text field.

EXPECTED RESULT
The overview renders the exact same way on the second display.

SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.22.90
KDE Frameworks Version: 5.86
Qt Version: 5.15
Comment 1 Arjen Hiemstra 2021-09-16 14:56:23 UTC 
Forgot to mention this is on Wayland.
Comment 2 Nate Graham 2021-09-21 19:55:44 UTC 
*** Bug 442643 has been marked as a duplicate of this bug. ***
Comment 3 Vlad Zahorodnii 2022-02-09 22:53:26 UTC 
The client filter model was changed so it's more "friendly" with mirrored outputs. Since we haven't received new bug reports, I think this issue can be closed.