https://bugs.kde.org/show_bug.cgi?id=470718
Bug ID: 470718
Summary: Display configuration layout is scrambled randomly
when using DP Daisy chain with same monitors
Classification: Plasma
Product: kwin
Version: 5.27.5
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: sunny.tree4...@mask8542384.mthw.me
Target Milestone: ---
Created attachment 159501
--> https://bugs.kde.org/attachment.cgi?id=159501&action=edit
Journalctl output after reconnecting displays
SUMMARY
When using multiple same monitor connect via display port daisy chaining,
layout is randomly scrambled and DP ports are changed
STEPS TO REPRODUCE
1. Connect two identical monitors via DP daisy chaining
2. Set display configuration layout (two monitors side by side and one
different bellow)
3. Go to sleep, hibernation, turn off display, disconnect and connect displays
or reboot
OBSERVED RESULT
Layout is scrambled - usually the two identical monitors switched and the
bottom different one offset to left
After boot the monitors have DP-5 and DP-4 after scrambling its usually DP-6
and DP-7
EXPECTED RESULT
Layout stays same as before.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.106.0
Qt Version: 5.15.9
Kernel Version: 6.3.5-zen2-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-8750H CPU @ 2.20GHz
Memory: 15.3 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630
Manufacturer: Dell Inc.
Product Name: G5 5587
ADDITIONAL INFORMATION
Journal log in attachment
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