Bug 511911

Summary:	Window content rendering at lower DPI when mirroring
Product:	[Plasma] kwin	Reporter:	Jonathan Isom <jeisom>
Component:	multi-screen	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	xaver.hugl
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Jonathan Isom 2025-11-10 14:48:52 UTC

SUMMARY

I have a 5120x2160@75(1.25 scale) monitor as primary and tried connecting my Jetkvm, 1080p@60, as a mirror. Alacritty and Spectacle(Capture), so far, see the screen at 1080P when the Jetjvm screen is enabled.

STEPS TO REPRODUCE
1. Connect Jetkvm(Or Other non-HiDPI screen?) and set as mirror of HiDPI screen.
2. Run Alacritty or take screenshot.

OBSERVED RESULT
Rendered at 1080p

EXPECTED RESULT
Rendered at 2160p

SOFTWARE/OS VERSIONS

Operating System: Arch Linux 
KDE Plasma Version: 6.5.2
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.7-273-linux-tkg (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 64 GiB of RAM (62.7 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 4080
Product Name: X570M Pro4
ADDITIONAL INFORMATION

Comment 1 Zamundaaa 2025-11-11 13:35:22 UTC


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