https://bugs.kde.org/show_bug.cgi?id=429580
Bug ID: 429580
Summary: Can't change screen brightness - OSD appears but
brightness does not change
Product: plasmashell
Version: 5.20.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: k...@davidedmundson.co.uk
Reporter: el...@seznam.cz
CC: plasma-b...@kde.org
Target Milestone: 1.0
SUMMARY
When I try to change brightness via shortcut Fn+F2/F3, OSD appears, but
brightness doesn't change. Only 0 % works, which turns display off.
This used to work, but I'm not sure which update broke it. I think I was trying
smooth brightness change in 5.20.0 and it worked, so maybe some of the later
updates.
Changing brightness via Energy Saving doesn't work either.
Also I tried lxqt-brightness. Lowering brightness worked fine, raising
brightness did work, but looked like it was changing gamma rather than
backlight intensity.
STEPS TO REPRODUCE
1. Start plasma
2. Use Fn+F2/F3 to change brightness
OBSERVED RESULT
Brightness does not change.
EXPECTED RESULT
Brightness should change.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro testing
KDE Plasma Version: 5.20.3
KDE Frameworks Version: 5.76.0
Qt Version: 5.15.1
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