https://bugs.kde.org/show_bug.cgi?id=438833
Bug ID: 438833
Summary: Everything jerks when changing laptop brightness and
external screen is enabled
Product: KScreen
Version: 5.18.1
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: k...@sedrubal.de
Target Milestone: ---
SUMMARY
When I plug in an external monitor and change my laptop display brightness or
lock my screen, everything (graphics, music, cursor) jerks for about one minute
and then it works again.
STEPS TO REPRODUCE
0. Use plasma desktop with X11
1. Plug in an external monitor
2. Extend screen to that monitor
3. Change display brightness or lock screen
OBSERVED RESULT
Everything jerks and CPU fan turns up for about one minute. Then everything
works again.
EXPECTED RESULT
Graphics and music should stay fluent.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: 5.22.1
KDE Frameworks Version: 5.83.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Kernel 5.10.44
Graphics Platform: X11
in journal this lines are showing up multiple times in that time span:
kscreen_backend_launcher[1033]: kscreen.xcb.helper: State (newValue,
Deleted): 0
kscreen_backend_launcher[1033]: kscreen.xcb.helper: Property:
BACKLIGHT
kscreen_backend_launcher[1033]: kscreen.xcb.helper: Output: 67
kscreen_backend_launcher[1033]: kscreen.xcb.helper: RRNotify_OutputProperty
(ignored)
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