Section: systemd-backlight@.service (8)
systemd-backlight@.service, systemd-backlight - Load and save the display backlight brightness at boot and shutdown
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/systemd/backlight/.
KERNEL COMMAND LINE
systemd-backlight understands the following kernel command line parameter:
- Takes a boolean argument. Defaults to "1". If "0", does not restore the backlight settings on boot. However, settings will still be stored on shutdown.