jcs.org / xdimmer
lightweight X11 utility to dim the screen and/or keyboard backlight when idle
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README.md

XDIMMER(1) - General Commands Manual

NAME#

xdimmer - dim the screen and/or the keyboard backlight when idle or when ambient light changes

SYNOPSIS#

xdimmer [-a] [-d] [-k] [-n] [-p percent] [-s steps] [-t timeout]

DESCRIPTION#

xdimmer waits timeout number of seconds and if no keyboard or mouse input is detected, the screen backlight is dimmed to percent in steps steps, unless the -n option was specified. Once keyboard or mouse input is detected, the screen backlight is restored to its previous brightness value.

On OpenBSD, if the -k option is used, the keyboard backlight is also dimmed to zero and restored upon movement via the wscons(4) interface.

Also on OpenBSD, if the -a option is used and an ambient light sensor device is located via sysctl(8), screen backlight (and keyboard backlight if -k is used) is dimmed or brightened based on lux readings.

OPTIONS#

-a

Change backlights according to ambient light sensor lux readings. Currently only supported on OpenBSD.

-d

Print debugging messages to stdout.

-k

Affect the keyboard backlight as well as the screen backlight. Currently only supported on OpenBSD.

-n

Do not adjust the screen backlight (can only be used if -k is used).

-p percent

Absolute brightness value to which the backlight is dimmed. The default is 10 percent.

-t steps

Number of steps to take while decrementing backlight. The default is 20 steps.

-t timeout

Number of seconds to wait without receiving input before dimming. The default is 120 seconds.

AUTHORS#

xdimmer was written by joshua stein <jcs@jcs.org>.

OpenBSD 6.1 - April 2, 2017