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.