systemd-backlight(8) [centos man page]

SYSTEMD-BACKLIGHT@.SERVICE(8)				    systemd-backlight@.service				     SYSTEMD-BACKLIGHT@.SERVICE(8)

NAME

       systemd-backlight@.service, systemd-backlight - Load and save the display backlight brightness at boot and shutdown

SYNOPSIS

       systemd-backlight@.service

       /usr/lib/systemd/systemd-backlight

DESCRIPTION

       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/. Note that by default, only firmware backlight devices are saved/restored.

SEE ALSO

       systemd(1)

systemd 208													     SYSTEMD-BACKLIGHT@.SERVICE(8)

XBACKLIGHT(1)						      General Commands Manual						     XBACKLIGHT(1)

NAME

       xbacklight - adjust backlight brightness using RandR extension

SYNOPSIS

       xbacklight [-help]  [-display display] [-get] [-set percent] [-inc percent] [-dec percent]

DESCRIPTION

       Xbacklight is used to adjust the backlight brightness where supported. It finds all outputs on the X server supporting backlight brightness
       control and changes them all in the same way.

       -get   Print out the current backlight brightness of each output with such a control. The brightness is represented as a percentage of  the
	      maximum brightness supported.

       -set percent
	      Sets each backlight brightness to the specified level.

       -inc percent
	      Increases brightness by the specified amount.

       -dec percent
	      Decreases brightness by the specified amount.

       -help  Print out a summary of the usage and exit.

       -time milliseconds
	      Length of time to spend fading the backlight between old and new value.  Default is 200.

       -steps number
	      Number of steps to take while faiding. Default is 20.

SEE ALSO

       Xrandr(3)

AUTHORS

       Keith Packard, Open Source Technology Center, Intel Corporation.

X Version 11							  xbacklight 1.1						     XBACKLIGHT(1)