man/systemd-backlight@.service.8

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  22 .SH "NAME"
  23 systemd-backlight@.service, systemd-backlight \- Load and save the display backlight brightness at boot and shutdown
  24 .SH "SYNOPSIS"
  25 .PP
  26 systemd\-backlight@\&.service
  27 .PP
  28 /usr/lib/systemd/systemd\-backlight
  29 .SH "DESCRIPTION"
  30 .PP
  31 systemd\-backlight@\&.service
  32 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
  33 /var/lib/systemd/backlight/\&.
  34 .SH "KERNEL COMMAND LINE"
  35 .PP
  36 systemd\-backlight
  37 understands the following kernel command line parameter:
  38 .PP
  39 \fIsystemd\&.restore_state=\fR
  40 .RS 4
  41 Takes a boolean argument\&. Defaults to
  42 "1"\&. If
  43 "0", does not restore the backlight settings on boot\&. However, settings will still be stored on shutdown\&.
  44 .RE
  45 .SH "SEE ALSO"
  46 .PP
  47 \fBsystemd\fR(1)