https://bugs.kde.org/show_bug.cgi?id=458053
Bug ID: 458053
Summary: Windows move between monitors when entering powersave
Product: kwin
Version: 5.25.4
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: evors...@protonmail.com
Target Milestone: ---
SUMMARY
***
When computer enters powersave, the open program windows move between monitors.
***
STEPS TO REPRODUCE
1. Have an external monitor connected to a laptop.
2. Have multiple windows open.
3. Leave the computer alone so it enters powersave.
4. Move mouse after powersave has kicked in
OBSERVED RESULT
All windows have moved to one monitor... in this case, the laptop monitor.
EXPECTED RESULT
Windows to stay where they have been left.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
(available in About System)
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.97.0
Qt Version: 5.15.5
ADDITIONAL INFORMATION
I suspect that this bug is due to the monitors entering powersave in different
ways. The HDMI output does not support dimming in the same way that the
internal laptop panel does.
When the monitors turn off at different times, this is detected and the windows
moved.
One easy fix for this would be to disable monitor change detection while
powersave is active.
;)
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