https://bugs.kde.org/show_bug.cgi?id=399646
--- Comment #16 from Jakob Petsovits <jpe...@petsovits.com> --- (In reply to Nils from comment #15) > acpi_video0/type -> firmware > amdgpu_bl2/type -> raw Hm, that could be tricky to fix without potentially breaking other systems. Reading material such as https://www.kernel.org/doc/Documentation/ABI/stable/sysfs-class-backlight or the more in-depth write-up at https://mjg59.livejournal.com/127103.html suggest that it's not necessarily safe to change both at once. Maybe we can learn something from https://github.com/systemd/systemd/blob/main/src/backlight/backlight.c which enumerates backlight devices to save/restore brightness at startup/shutdown time. Based on a quick initial reading, it seems to allow both firmware/platform devices and raw devices next to each other, but filters out any raw backlight device that points to the same PCI device parent as another firmware/platform backlight device. I think doing the same in powerdevil could fix this remaining use case... while also making the code more fragile :-S -- You are receiving this mail because: You are watching all bug changes.
