Bug 500371

Summary:	Present Windows not rendering properly on primary monitor with multiple monitors
Product:	[Plasma] kwin	Reporter:	James <jheinem01>
Component:	effects-present-windows	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED FIXED
Severity:	major	CC:	nate
Priority:	NOR	Keywords:	multiscreen
Version First Reported In:	6.3.0
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description James 2025-02-19 05:57:37 UTC

STEPS TO REPRODUCE  
1. Set up two monitors with the primary monitor designated in System Settings.  
2. Open several windows on the primary monitor.  
3. Trigger the “Present Windows” effect (by pressing [key combination] or via the screen edge).  

OBSERVED BEHAVIOR  
No windows from the primary monitor are rendered after triggering the effect, while on the secondary monitor the windows are shown. Some minor visual glitches can also be observed on the primary monitor.

EXPECTED BEHAVIOR  
The “Present Windows” effect should show all open windows on whichever monitor it is activated on.

SOFTWARE/OS VERSIONS
Linux: Bazzite 41 (stable-41.20250216.2)
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2
Graphics Platform: Wayland

Comment 1 Nate Graham 2025-02-19 19:08:33 UTC


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

Comment 2 James 2025-02-19 22:16:29 UTC

(In reply to Nate Graham from comment #1)
> 
> *** This bug has been marked as a duplicate of bug 481222 ***

I don't believe bug 481222 is describing the same issue as this bug report is.

Comment 3 Nate Graham 2025-02-19 22:18:54 UTC

No, but the root cause is the same.

Comment 4 James 2025-02-27 01:54:58 UTC

(In reply to Nate Graham from comment #3)
> No, but the root cause is the same.

I should clarify that this is a *new* issue introduced in Plasma 6.3 (I've personally reverted to 6.2.5 until this is fixed which does not have this issue) and the displays are not being mirrored.

Specifically, I have two 4k monitors set up like so:

```
3840x2160 @ 144 Hz (as 1920x1080) in 27" [External, HDR]
3840x2160 @ 144 Hz (as 1920x1080) in 27" [External, HDR] *
```

bug 481222 appears to have been introduced in Plasma 5.93.0.

Comment 5 Nate Graham 2025-02-28 16:31:28 UTC

Hmm, maybe it really is a new and different issue, then. Re-opening.

Comment 6 James 2025-02-28 23:05:40 UTC

This appears to have been fixed in Plasma 6.3..

Comment 7 James 2025-02-28 23:06:29 UTC

This appears to have been fixed in Plasma 6.3..(In reply to James from comment #6)
> This appears to have been fixed in Plasma 6.3..

*6.3.1, my bad.