Bug 491144 - With unified/mirrored outputs, windows are only shown on one screen's Overview
Summary: With unified/mirrored outputs, windows are only shown on one screen's Overview
Status: RESOLVED DUPLICATE of bug 481222
Alias: None
Product: kwin
Classification: Plasma
Component: effects-overview (show other bugs)
Version: unspecified
Platform: Other Linux
: NOR minor
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: multiscreen
Depends on:
Blocks:
 
Reported: 2024-08-01 21:58 UTC by Rafael Lima
Modified: 2024-09-19 14:23 UTC (History)
3 users (show)

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


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Description Rafael Lima 2024-08-01 21:58:32 UTC
SUMMARY
I am using Plasma 6.1.3 on Fedora 40 (KDE spin). When I connect an second monitor or projector, select "Unify outputs" and activate the overview effect, the effect is only shown in the primary monitor; the second monitor only shows the background image.

Previously (in Plasma 5.27) when I activated the Overview effect with a projector, the effect was shown in both outputs as expected (since the Unify outputs option is selected).

There's no problem when I extend outputs.

STEPS TO REPRODUCE
1. Connect an external monitor or projector
2. Choose the "Unify outputs" option to show the same image on both outputs
3. Press Meta+W to open the overview
4. The overview will be shown in the primary monitor, but not in the projector

OBSERVED RESULT
The projector is not showing the overview effect; only the background image is shown.

EXPECTED RESULT
The projector should show the overview effect as well.

ADDITIONAL INFORMATION
Operating System: Fedora Linux 40
KDE Plasma Version: 6.1.3
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.2
Kernel Version: 6.9.12-200.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-10750H CPU @ 2.60GHz
Memory: 15,5 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics
Manufacturer: LENOVO
Product Name: 82CG
System Version: IdeaPad Gaming 3 15IMH05
Comment 1 Nate Graham 2024-08-06 21:37:19 UTC
Cannot reproduce in current git master. When I connect an external screen (in my case a 1080p HDMI monitor) and select "unify outputs", Overview appears on both screens as expected. Assuming it's fixed in Plasma 6.2, but feel free to re-open this if you find that it's not fixed for you after upgrading to Plasma 6.2. Thanks!
Comment 2 Rafael Lima 2024-08-21 17:14:50 UTC
(In reply to Nate Graham from comment #1)
> Cannot reproduce in current git master. When I connect an external screen
> (in my case a 1080p HDMI monitor) and select "unify outputs", Overview
> appears on both screens as expected. Assuming it's fixed in Plasma 6.2, but
> feel free to re-open this if you find that it's not fixed for you after
> upgrading to Plasma 6.2. Thanks!

I tested today with the latest Dev edition of KDE neon (built on Aug 18 - Plasma 6.2) and the issue persists.

The overview does open on both screens, but the windows are shown only on one of them. Here is an improved set of steps to reproduce the issue:

1. Connect an external monitor or projector
2. Choose the "Unify outputs" option to show the same image on both outputs
3. Open some application windows
4. Press Meta+W to open the overview
5. Notice that the windows will appear only on one of the outputs; they should appear on both, because outputs are unified
Comment 3 Nate Graham 2024-08-31 01:42:30 UTC
It sounds like the original issue was fixed, but there's now a new issue with the *content* not being mirrored as expected. I can reproduce that. We can track it with this same bug report.
Comment 4 Nate Graham 2024-09-18 17:17:49 UTC
*** Bug 492827 has been marked as a duplicate of this bug. ***
Comment 5 Zamundaaa 2024-09-19 14:23:38 UTC

*** This bug has been marked as a duplicate of bug 481222 ***