Bug 507703 - Unable to Enable 2nd Multi Monitor
Summary: Unable to Enable 2nd Multi Monitor
Status: RESOLVED DUPLICATE of bug 507702
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_kscreen (other bugs)
Version First Reported In: 6.4.3
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: kscreen-bugs-null@kde.org
URL:
Keywords: multiscreen
Depends on:
Blocks:
 
Reported: 2025-07-31 17:00 UTC by Robin
Modified: 2025-09-18 12:08 UTC (History)
3 users (show)

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


Attachments
Quick recording of failing to configure 2nd monitor (650.69 KB, video/webm)
2025-07-31 17:00 UTC, Robin
Details

Note You need to log in before you can comment on or make changes to this bug.
Description Robin 2025-07-31 17:00:45 UTC
Created attachment 183687 [details]
Quick recording of failing to configure 2nd monitor

***
If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org

If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports

Please remove this comment after reading and before submitting - thanks!
***

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 ***