SUMMARY When pressing the brightness up or down keys, the brightness changes by 10% instead of 5% most of the time. Sometimes, it changes by 5% but there doesn't seem to be a pattern to when it decides to correctly change by 5 instead of incorrectly changing by 10. Changing the shortcut to something without the brightness keys (like Meta+Shift+U or Meta+Shift+D) will not exhibit this behavior. Any shortcut that *does* use the brightness keys (like Ctrl+Monitor Brightness Up or Ctrl+Monitor Brightness Down) *will* exhibit this behavior. STEPS TO REPRODUCE 1. Press the brightness up or brightness down key OBSERVED RESULT The OSD will pop up and indicate a change of 10% instead of 5% most of the time. Sometimes it correctly changes by 5 but that seems to happen randomly. EXPECTED RESULT The brightness should consistently change by 5%. SOFTWARE/OS VERSIONS Linux: Arch Linux x86_64, Kernel 6.12.4-arch1-1 KDE Plasma Version: 6.2.4 KDE Frameworks Version: 6.9.0 Qt Version: 6.8.1 ADDITIONAL INFORMATION Machine (laptop): Dell Inspiron 15 3525 (0B6B) I couldn't get much info about the display itself other than it's a 120Hz 1920x1080 panel made by BOE.
Update: It seems to go after I put the machine to sleep and wake it up? I don't really know what could be causing this.
There have been a lot of improvements and bug fixes to brightness control since this report was opened. I'm not currently able to reproduce this on Plasma 6.3.2 or git-master. If this is still happening on your system, can you please copy and paste the output of `kscreen-doctor -o`? Thanks.
Hi, it's still happening and still goes away after I put the laptop into sleep and wake it up. Here's the output of 'kscreen-doctor -o' (I currently have the brightness set to 5% (I typically do around 5 to 15%) which I obtained by fiddling around with the brightness up/down keys until one of them changed by the correct 5% instead of the incorrect 10%): Output: 1 eDP-1 enabled connected priority 1 Panel Modes: 1:1920x1080@120*! 10:640x480@120 11:1280x1024@60 12:1024x768@60 13:1280x800@60 14:1920x1080@60 15:1600x900@60 16:1368x768@60 17:1280x720@60 2:1920x1080@60 3:1680x1050@120 4:1280x1024@120 5:1440x900@120 6:1280x800@120 7:1280x720@120 8:1024x768@120 9:800x600@120 Geometry: 0,0 1920x1080 Scale: 1 Rotation: 1 Overscan: 0 Vrr: Automatic RgbRange: unknown HDR: incapable Wide Color Gamut: incapable ICC profile: none Color profile source: sRGB Color power preference: prefer efficiency and performance Brightness control: supported, set to 5% and dimming to 100%