https://bugs.kde.org/show_bug.cgi?id=500555
Bug ID: 500555
Summary: 'Rectangular Region' captures wrong monitor with
fractional scaling
Classification: Applications
Product: Spectacle
Version: 6.3.1
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: General
Assignee: noaha...@gmail.com
Reporter: madness...@proton.me
CC: k...@david-redondo.de
Target Milestone: ---
Created attachment 178715
--> https://bugs.kde.org/attachment.cgi?id=178715&action=edit
Showcase of the bug.
SUMMARY
When using per monitor fractional scaling, with a specific resolution and
scaling value, the rectangular region feature captures the wrong screen.
STEPS TO REPRODUCE
1. Set primary monitor to 2560x1440, 125% scaling.
2. Set secondary monitor to 3840x2160, 185% scaling, placed left of the primary
monitor.
3. Launch spectacles
4. Press on "Rectangular Region"
5. Select a region on the secondary monitor.
OBSERVED RESULT
The rectangular region captures the primary monitor.
EXPECTED RESULT
The rectangular region should capture the content on the secondary monitor.
SOFTWARE/OS VERSIONS
Linux: Fedora 41
KDE Plasma Version: 6.3.1
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
ADDITIONAL INFORMATION
- This seems to be a regression, I cannot replicate it with a Fedora 41 Live
USB.
- This bug does not appear when the secondary monitor is placed right of the
primary monitor.
- Changing secondary monitor scaling to 175% fixes the issue.
- I was not able to replicate this bug on a different resolution.
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