Bug 466296 - With mirrored/unified screens that have different resolutions/scale factors, log out screens on multi-screen setups are stacked on top of each other on one screen
Summary: With mirrored/unified screens that have different resolutions/scale factors, ...
Status: RESOLVED FIXED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Session Management (other bugs)
Version First Reported In: 5.27.1
Platform: Neon Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords: multiscreen
Depends on:
Blocks:
 
Reported: 2023-02-23 10:25 UTC by Riccardo Robecchi
Modified: 2025-06-20 16:07 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In: 6.4.0
Sentry Crash Report:

Attachments
Screenshot of the issue (2.23 MB, image/png)
2023-02-23 10:25 UTC, Riccardo Robecchi 		Details
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Description Riccardo Robecchi 2023-02-23 10:25:13 UTC 
Created attachment 156639 [details]
Screenshot of the issue

SUMMARY
I have a multi-monitor setup: the laptop's screen is replicated by an external monitor (both 1920x1080), above which is another monitor (2560x1440). When I log out/restart/shutdown, the screen is not correctly placed and ends up having two screens stacked on top of each other, with one visibly smaller.

STEPS TO REPRODUCE
1. Use a multi-monitor setup with a vertical arrangement of screens
2. Try to log out/reboot/shutdown

OBSERVED RESULT
The log out screens from all the monitors appear stacked on just one.

EXPECTED RESULT
A log out screen is shown on each individual monitor.

SOFTWARE/OS VERSIONS
Linux: KDE neon
KDE Plasma Version: 5.27.1
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
Comment 1 Nate Graham 2023-02-24 19:38:14 UTC 
X11 or Wayland? If it's X11, does it work on Wayland?
Comment 2 Riccardo Robecchi 2023-02-25 17:50:16 UTC 
X11. Wayland doesn't work on my setup for whatever reason.
Comment 3 Nate Graham 2023-02-28 18:43:31 UTC 
Does this issue happen when none of the screens are being mirrored to other screens?
Comment 4 Riccardo Robecchi 2023-03-01 09:38:58 UTC 
Yes, it still happens.
Comment 5 Nate Graham 2023-04-21 15:23:24 UTC 
Can reproduce on Wayland with a unified/mirrored mixed-DPI/scale multimonitor arrangement.
Comment 6 Riccardo Robecchi 2025-06-20 10:10:21 UTC 
This seems to work now, at least on X11. Nate, can you confirm it works on Wayland, too?
Comment 7 Nate Graham 2025-06-20 16:07:45 UTC 
Yep, fixed for me on Wayland too!