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/.
systemd-backlight understands the following kernel command line parameter:
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