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NAME
       [email protected], systemd-backlight - Load and save the display backlight brightness at boot and
       shutdown

SYNOPSIS
       [email protected]

       /usr/lib/systemd/systemd-backlight

DESCRIPTION
       [email protected] 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/. During loading, if
       udev property ID_BACKLIGHT_CLAMP is not set to false value, the brightness is clamped to a value of at least 1
       or 5% of maximum brightness, whichever is greater. This restriction will be removed when the kernel allows
       user space to reliably set a brightness value which does not turn off the display.

KERNEL COMMAND LINE
       systemd-backlight understands the following kernel command line parameter:

       systemd.restore_state=
           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.

SEE ALSO
       systemd(1)



systemd 219                                                                             [email protected](8)