https://bugs.kde.org/show_bug.cgi?id=413451
Bug ID: 413451
Summary: Explicit OLED support for brightness control (laptops)
Product: Powerdevil
Version: 5.16.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: mdedetr...@gmail.com
Target Milestone: ---
SUMMARY
Due to OLED displays not having a backlight, the typical way of handling
brightness (i.e. the brightness control) does not work, ergo changing the
brightness slider doesn't actually have any effect. From doing some research it
appears that the way this is handled is as an exception case i.e. detect if the
display is an OLED and then instead change the gamma instead of the backlight
brightness directly from the linux kernel.
There is a general topic on reddit here
https://www.reddit.com/r/linux/comments/cmf0vi/the_state_of_oled_brightness_on_linux/
with some useful information. System76 which sells linux laptops that have
OLED's have also open sourced their solution for the displays (i.e. see
https://github.com/pop-os/system76-oled, the solution uses xrandr to solve the
problem, i.e. equivalent of xrandr --output eDP-1 --brightness <X> ).
It would be great if this functionality was built into KDE's brightness
control, from what I know there aren't actually that many laptop OLED displays,
they all appear to be created from Samsung so detecting them shouldn't be too
hard.
SOFTWARE/OS VERSIONS
Linux Kernel Version: 5.3.7
(available in About System)
KDE Plasma Version: 5.16.5
Distribution: Nixos Unstable
--
You are receiving this mail because:
You are watching all bug changes.
