https://bugs.kde.org/show_bug.cgi?id=483143
Bug ID: 483143
Summary: Wayland multi-monitor output order changing on session
start
Classification: Plasma
Product: kwin
Version: 6.0.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: wannabethe...@gmail.com
Target Milestone: ---
Created attachment 166895
--> https://bugs.kde.org/attachment.cgi?id=166895&action=edit
Typical Wayland info center output
SUMMARY
On Wayland session start, multi-monitor order appears to change randomly.
Simply logging out and in is enough.
STEPS TO REPRODUCE
1. Log in to a Wayland session
2. Open the Wayland section in the Info Center
3. Check xdg_output and wl_output
OBSERVED RESULT
Between sessions, order of monitors may change.
EXPECTED RESULT
Monitors always keep the same order.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: CachyOS, but also observable on latest KDE Neon
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
ADDITIONAL INFORMATION
On Fedora KDE with Plasma 5.27.10, and CachyOS before Arch updated to Plasma
6.0.1, the order of monitors remains fixed. (With the order of the first log.)
With Plasma 6.0.1, it switches on session start randomly. Since I only have two
displays I can test with, I can't tell what happens to the order with three or
more.
I noticed this when certain mpv functions started behaving differently right
after the upgrade to Plasma 6.0.1.
I'm not sure if this is the correct Product/Component. The order of screens in
the Window Manager section of the Info Center remains the same (DP-1 >
HDMI-A-1) when the order flips in the Wayland section.
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