Bug 489849 - Overview doesn't show open windows on mirrored display
Summary: Overview doesn't show open windows on mirrored display
Status: CONFIRMED
Alias: None
Product: kwin
Classification: Plasma
Component: effects-overview (show other bugs)
Version: master
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-07-06 21:34 UTC by maelmauron
Modified: 2025-02-22 12:45 UTC (History)
5 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description maelmauron 2024-07-06 21:34:05 UTC
DESCRIPTION:
The Overview effect does not show any open windows on monitors mirroring the primary monitor. Although window previews do appear on the main monitor with a secondary monitor connected and configured to mirror the primary monitor, the overview always appears empty on the secondary monitor.

EXPECTED BEHAVIOR:
Window previews in the Overview effect should be correctly shown both on the primary monitor and any monitor mirroring it.

STEPS TO REPRODUCE:
- Connect a secondary monitor
- In display options, configure this monitor to mirror the primary display.
- Open one or more windows.
- Activate the Overview effect through any means / shortcut. Window previews will be shown on the primary but not on the secondary display.

ADDITIONAL INFORMATION
Tested on an AMD laptop using the amdgpu driver and a PC using an Nvidia graphics card + the nouveau driver 

SOFTWARE VERSIONS:
Tested both on Plasma 6.0 and 6.1
Qt 6.7.2-1
Comment 1 Leszek Lesner 2024-08-31 09:21:59 UTC
Can confirm. First I thought the Desktop is broken. But it appears windows are only shown per screen. Other effects that should stack windows or show them behave the same like (CTRL+F10) for example.
Comment 2 Christoph 2024-09-30 18:55:20 UTC
I can confirm this also happen with 6.1.5 and annoys me since 6.0 (because i use this to work mirrored with a projector....)
Comment 3 Christoph 2024-09-30 18:57:27 UTC
Addition: It is irellevant which monitor is set as primary. It's always the one who is "first" for the system. On a laptop the internal screen.
Comment 4 Christoph 2024-10-13 18:20:29 UTC
The problem is still present in Plasma 6.2.0

Operating System: Fedora Linux 40
KDE Plasma Version: 6.2.0
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2
Kernel Version: 6.10.12-200.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × Intel® Core™ i7-10875H CPU @ 2.30GHz
Memory: 31,0 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics
Manufacturer: LENOVO
Product Name: 82EH
System Version: Lenovo Legion C7 15IMH05
Comment 5 Christoph 2025-02-22 12:45:09 UTC
still present in 6.3.1.

Any chance we get this fixed? :-D