Bug 507703

Summary:	Unable to Enable 2nd Multi Monitor
Product:	[Applications] systemsettings	Reporter:	Robin <brotatos>
Component:	kcm_kscreen	Assignee:	kscreen-bugs-null <kscreen-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	alfonse00, kdedev, plasma-bugs-null
Priority:	NOR	Keywords:	multiscreen
Version First Reported In:	6.4.3
Target Milestone:	---
Platform:	Other
OS:	Linux
See Also:	https://bugs.kde.org/show_bug.cgi?id=506544
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Quick recording of failing to configure 2nd monitor

Description Robin 2025-07-31 17:00:45 UTC

Created attachment 183687 [details]
Quick recording of failing to configure 2nd monitor

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SUMMARY


STEPS TO REPRODUCE
1. Attempt to enable third monitor
2. Rearrange to remove gaps
3. All monitors disappear from widget

OBSERVED RESULT

2nd monitor remains disabled

EXPECTED RESULT

2nd monitor remains on 

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
Kernel Version: 6.15.8-arch1-2 (64-bit)
Graphics Platform: Wayland
Processors: 16 × Intel® Core™ i9-10885H CPU @ 2.40GHz
Memory: 64 GiB of RAM (62.5 GiB usable)
Graphics Processor: Quadro RTX 5000 with Max-Q Designks Version: 

ADDITIONAL INFORMATION

Comment 1 alfonse00 2025-08-19 04:07:30 UTC

I had a similar problem and my workaround using the CLI to configure the secondary screen position might work for you too. The issue is https://bugs.kde.org/show_bug.cgi?id=507702

The relevant part for you:

The two commands that enabled and correctly positioned the secondary screen were
```
kscreen-doctor output.HDMI-A-1.enable
kscreen-doctor output.HDMI-A-1.position.1920,0
```

The position should be corrected depending on the primary screen resolution and the  `HDMI-A-1` should be changed to whatever the port for the secondary screen is.

Comment 2 TraceyC 2025-08-19 16:25:39 UTC

Thanks for the bug report. This looks to be the same as bug 507702. I'm going to merge this report into the other once.

*** This bug has been marked as a duplicate of bug 507702 ***