On 06/18/2018 06:33 PM, Piotr wrote: > On Mon, 18 Jun 2018 17:24:11 +0900 > likcoras <likco...@riseup.net> wrote: > >> You may try looking into the systemd-backlight@*.service, see if it's >> starting properly on your system or if it prints any errors while it >> starts. > > Strange thing that I see more than one backlight service starting. > Should I have both of them running? Why do they appear twice in the > journalctl? Could this be a source of issue? > > Also I do not see the errors in the logs.
This is from the arch wiki[1], it seems the suggestion is to mask one of the services. On my system, intel_backlight is the only one active and it works well, so I suggest masking the samsung one with something like: systemd mask systemd-backlight@backlight\:samsung.service If that doesn't work, try the other way around, unmask samsung and mask intel_backlight. [1] https://wiki.archlinux.org/index.php/Backlight#systemd-backlight_service