https://bugs.kde.org/show_bug.cgi?id=488963
Bug ID: 488963
Summary: wl_output order doesn't respect KScreen priority
settings
Classification: Plasma
Product: kwin
Version: 6.1.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: o...@np880.ru
Target Milestone: ---
Created attachment 170806
--> https://bugs.kde.org/attachment.cgi?id=170806&action=edit
Screen Priorities
SUMMARY
I have 3 monitors, with my primary monitor in the middle. I've set screen
priorities with the middle monitor as a primary monitor. But KWin doesn't
respect this setting and place wl_outputs in arbitrary order (probably how
monitors were initialized during boot). This is very annoying since a there's
no concept of primary monitor in Wayland and most fullscreen apps (mostly SDL
ones) are putting themselves on a first reported wl_output.
STEPS TO REPRODUCE
1. Log into system (either with autologin or SDDM)
2. Look at the KScreen priority settings (attachment)
3. Compare them to wl_outputs order in System Info Wayland section (additional
info)
OBSERVED RESULT
wl_outputs order MUST match KScreen's display order (kscreen-console outputs or
kscreen-doctor -o)
EXPECTED RESULT
wl_outputs order differs from KScreen's one, most importantly primary display
isn't the first reported wl_output
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.1.0
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.1
Kernel Version: 6.9.5-2-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-7700K CPU @ 4.20GHz
Memory: 15.6 ГиБ of RAM
Graphics Processor: AMD Radeon RX 6700 XT
ADDITIONAL INFORMATION
interface: 'kde_output_device_v2', version: 8, name: 59
interface: 'kde_output_device_v2', version: 8, name: 60
interface: 'kde_output_device_v2', version: 8, name: 61
interface: 'wl_output', version: 4, name: 62
name: HDMI-A-1
description: Philips Consumer Electronics Company Philips
235PL/DL41103143133
x: 3840, y: 0, scale: 1,
physical_width: 510 mm, physical_height: 287 mm,
make: 'Philips Consumer Electronics Company', model: 'Philips
235PL/DL41103143133',
subpixel_orientation: unknown, output_transform: 90°,
mode:
width: 1920 px, height: 1080 px, refresh: 60.000 Hz,
flags: current
interface: 'wl_output', version: 4, name: 63
name: DP-2
description: Philips Consumer Electronics Company Philips
226V4/UK81443014262
x: 0, y: 0, scale: 1,
physical_width: 477 mm, physical_height: 268 mm,
make: 'Philips Consumer Electronics Company', model: 'Philips
226V4/UK81443014262',
subpixel_orientation: unknown, output_transform: normal,
mode:
width: 1920 px, height: 1080 px, refresh: 60.000 Hz,
flags: current
interface: 'wl_output', version: 4, name: 64
name: DP-1
description: ASR PG27FF1A/0x00000D42
x: 1920, y: 0, scale: 1,
physical_width: 598 mm, physical_height: 336 mm,
make: 'ASR', model: 'PG27FF1A/0x00000D42',
subpixel_orientation: unknown, output_transform: normal,
mode:
width: 1920 px, height: 1080 px, refresh: 165.003 Hz,
flags: current
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