The brightness setting on my monitor continuously reverts to 20%, regardless of my attempts to adjust it to 100%. This issue causes the monitor to be excessively bright, leading to discomfort and strain on my eyes. I would appreciate any assistance in resolving this problem, as a consistent brightness level is crucial for my comfort while using the device. Thank you!
What version of Plasma are you using, and on What distro? How many monitors do you have, what are their brands and models, and how are they connected?
Created attachment 175339 [details] Brightness setting
(In reply to Nate Graham from comment #1) > What version of Plasma are you using, and on What distro? > > How many monitors do you have, what are their brands and models, and how are > they connected? Operating System: Arch Linux KDE Plasma Version: 6.2.0 KDE Frameworks Version: 6.6.0 Qt Version: 6.7.3 Kernel Version: 6.11.2-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 9 PRO 7940HS w/ Radeon 780M Graphics Memory: 60.6 GiB of RAM Graphics Processor: AMD Radeon 780M Manufacturer: HP Product Name: HP EliteBook 845 14 inch G10 Notebook PC System Version: SBKPF Summary The brightness setting on DELL U2715H consistently resets to 20% or 30%, causing discomfort due to excessive brightness. Description I am experiencing an issue with the brightness setting on my DELL U2715H monitor, which always reverts to either 20% or 30%, despite my attempts to manually adjust it. In contrast, my Samsung LS27A600U monitor does not exhibit this problem. The excessive brightness from the DELL monitor causes discomfort and strain on my eyes, making it difficult to use for extended periods. I would greatly appreciate any assistance in resolving this issue to maintain a consistent brightness level. Thank you!
(In reply to Nate Graham from comment #1) > What version of Plasma are you using, and on What distro? > > How many monitors do you have, what are their brands and models, and how are > they connected? Sorry for the additional comment regarding the connections. I am encountering an issue with my DELL U2715H monitor when connected through USB-C to my laptop, while the Samsung LS27A600U monitor is daisy-chained via DisplayPort (DP) directly to the DELL monitor. The brightness setting on the DELL U2715H consistently reverts to either 20% or 30%, despite my efforts to adjust it manually. In contrast, the Samsung LS27A600U does not exhibit this problem. The excessive brightness from the DELL monitor leads to discomfort and strain on my eyes. I would appreciate any assistance in resolving this issue to ensure a consistent brightness level. Thank you!
Thanks for the info.
If you have an X11 session available for testing, could you try logging into that one to see if the problem also surfaces there? (To confirm whether or not this is related to PowerDevil's KWin integration.)
My KDE Plasma system became unbootable, so I reinstalled it. Now it's much more stable, and the brightness settings persist. I'm not entirely sure what caused the initial issue, but it's resolved now.