https://bugs.kde.org/show_bug.cgi?id=437403
Bug ID: 437403
Summary: System brightness changing w/ power cable and HDMI
Product: Powerdevil
Version: 5.21.5
Platform: Kubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: lucas.olvr.cam...@gmail.com
Target Milestone: ---
SUMMARY
Once per session, inserting or removing notebook power cable (if machine was
turned on on battery or if it was turned on with power cable on,
respectively), or inserting then removing HDMI, reduces screen brightness
automatically. After it happens once, it won't happen again until system
reboot.
STEPS TO REPRODUCE
1. Turn on notebook on battery
2. Insert power cable
or
1. Turn on notebook on ac power
2. Remove power cable
or
1. Insert HDMI
2. Remove HDMI
OBSERVED RESULT
Screen brightness reduced to 1%
EXPECTED RESULT
No change
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 21.04 - kernel 5.11.0-17
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
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