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asmctl(1)		FreeBSD	General	Commands Manual		     asmctl(1)

NAME
     asmctl -- controlling keyboard backlight and LCD backlight

SYNOPSIS
     asmctl video [up |	down | acpi]
     asmctl key	[up | down]

DESCRIPTION
     The asmctl	command	controls LCD backlight and keyboard backlight by set-
     ting following sysctl(8) variables.

	   hw.acpi.video.lcd0.brightness
	   dev.asmc.0.light.control

OPTIONS
     video up
	     LCD backlight more	bright.

     video down
	     LCD backlight less	dark.

     video acpi
	     switch LCD	backlight brightness for AC powerd or Battery powered,
	     depends on	acpi status.

     key up  keyboard backlight	more bright.

     key down
	     keybaord backlight	less dark.

FILES
     /var/lib/asmctl.conf
	     Saved sysctl(8) values for	next boot.

REQUIERMENT
     Following kernel modules are required.

	   asmctl.ko
	   acpi_video.ko

SECURITY
     Changing hw.acpi.video.* sysctl variables requires	root privilege.	 For
     this reason, asmctl is installed with setuid root.	 On FreeBSD-11.0R or
     higher, asmctl uses capsicum(4) to	be sandboxed.

FreeBSD	13.0		       January 15, 2021			  FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | REQUIERMENT | SECURITY

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