https://bugs.kde.org/show_bug.cgi?id=511288
Bug ID: 511288
Summary: External monitor brightness reset to 100% after
restart, plasma still thinks it's 70%
Classification: Plasma
Product: KScreen
Version First 6.4.5
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: common
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
When i set the brightness to say, 70%, on my external monitor connected over
mini-displayport, it works fine over dcc/ci as expected.
however, when i restart my pc, plasma/kscreen/kwin still thinks it's 70%, but
my monitor has reverted to 100% as that's what it's set to by default in the
firmware.
I know this is technically a bug in the monitor, that it doesen't store the
DCC/CI brightness in it's flash, but i feel like this is something that could
be fixed in plasmashell/kscreen/kwin as well.
STEPS TO REPRODUCE
1. Set brightness to 70% on external monitor
2. Restart PC
OBSERVED RESULT
Monitor at 100% Brightness even though plasmashell/kscreen/kwin thinks it's 70%
EXPECTED RESULT
plasmashell/kscreen/kwin would reset back to 100% so it's in sync,
OR
plasmashell/kscreen/kwin sends the DCC/CI command to the monitor on login to
set to 70% until i manually change it again.
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.19.0
Qt Version: 6.9.2
Kernel Version: 6.17.4-200.fc42.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-7300HQ CPU @ 2.50GHz
Memory: 24 GiB of RAM (23.3 GiB usable)
Graphics Processor 1: Intel® HD Graphics 630
Graphics Processor 2: NVIDIA GeForce GTX 1050 Ti
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: FX502VE
System Version: 1.0
ADDITIONAL INFORMATION
I'm fine with either solution i wrote in expected result.
I usually only set the brightness to 70% when it's dark outside. I don't mind
setting it manually every day, until
https://bugs.kde.org/show_bug.cgi?id=413165 get's implemented, but it's
annoying that i gotta first set it to 100% so the brightness syncs, and then
back to 70%.
I don't mind the brightness resetting to 100% when restart, that part's fine.
But either behaviour is fine, i guess.
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