515283 – Problem with two monitors If the second monitor is on the left

Bug 515283 - Problem with two monitors If the second monitor is on the left

Summary: Problem with two monitors If the second monitor is on the left

Status:	RESOLVED UPSTREAM

Alias:	None

Product:	kde
Classification:	I don't know
Component:	general (other bugs)
Version First Reported In:	unspecified
Platform:	EndeavourOS Linux

Importance:	NOR normal
Target Milestone:	---
Assignee:	Unassigned bugs

URL:
Keywords:

Depends on:
Blocks:

Reported:	2026-01-29 23:29 UTC by Tars
Modified:	2026-01-30 11:08 UTC (History)
CC List:	1 user (show)

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

Attachments
This is how I imagine it (1.37 MB, image/png) 2026-01-29 23:32 UTC, Tars	Details
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Description Tars 2026-01-29 23:29:48 UTC

My pc:
gpu: Rx9070
cpu: ryzen 5600x
motherboard: asus b550 plus wifi II
primary monitor: 165hz
second monitor: 60hz

Steps to reproduce:
1. Move the second monitor in System Preferences so that it is on the left and its upper left corner is higher than the primary monitor

After this, Steam and Discord start running at 60Hz instead of 165Hz on the primary monitor. Games and system work perfectly.


SOFTWARE/OS VERSIONS
Kernel: 6.18.7-arch1-1
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.1

ADDITIONAL INFORMATION
Same thing on Gnome. There was no such problem on NVIDIA.
I think that Wayland somehow determines the hertz of applications through the upper left corner. Maybe its problem in mesa driver

Comment 1 Tars 2026-01-29 23:32:48 UTC

Created attachment 189044 [details]
This is how I imagine it

Comment 2 Tars 2026-01-30 08:33:32 UTC

Second monitor connected via hdmi, primary monitor connected via display port

Comment 3 TraceyC 2026-01-30 11:08:55 UTC

It looks like the root cause of this bug is in the AMD driver. You can open a bug report about this at https://gitlab.freedesktop.org/drm/amd/-/issues so the AMD developers can take a look. Unfortunately, I don't think there's anything KDE can do.