systemd Developer Lennart Poettering lennart@poettering.net systemd-backlight@.service 8 systemd-backlight@.service systemd-backlight Load and save the display backlight brightness at boot and shutdown systemd-backlight@.service /usr/lib/systemd/systemd-backlight systemd-backlight@.service is a service that restores the display backlight brightness at early-boot and saves it at shutdown. On disk the backlight brightness is stored in /var/lib/backlight/. Note that by default only firmware backlight devices are saved/restored. systemd1