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-.\" LP (Laptop Package)
-.\"
-.\" Copyright (c) 1994 by Tatsumi Hosokawa <hosokawa@jp.FreeBSD.org>
-.\"
-.\" This software may be used, modified, copied, and distributed, in
-.\" both source and binary form provided that the above copyright and
-.\" these terms are retained. Under no circumstances is the author
-.\" responsible for the proper functioning of this software, nor does
-.\" the author assume any responsibility for damages incurred with its
-.\" use.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd December 22, 2009
-.Dt APM 8 i386
-.Os
-.Sh NAME
-.Nm apm
-.Nd control the APM BIOS and display its information
-.Sh SYNOPSIS
-.Nm
-.Op Fl ablstzZ
-.Op Fl d Ar enable
-.Op Fl e Ar enable
-.Op Fl h Ar enable
-.Op Fl r Ar delta
-.Sh DESCRIPTION
-The
-.Nm
-utility
-controls the Intel / Microsoft APM (Advanced Power Management) BIOS and
-displays the current status of APM on laptop PCs.
-.Pp
-The options are as follows:
-.Bl -tag -width indent
-.It Fl a
-Display the current AC-line status as an integer value.
-The values
-0, 1 and 2 correspond to the
-.Dq off-line
-state,
-.Dq on-line
-state or
-.Dq backup power
-state, respectively.
-.It Fl b
-Display an integer value reflecting the current battery status.
-The values 0, 1, 2, 3, correspond to the
-.Dq high
-status,
-.Dq low
-status,
-.Dq critical
-status,
-.Dq charging
-status respectively.
-.It Fl d Ar enable
-Disable/enable suspending of the display separately from a normal suspend
-using the boolean value for
-.Ar enable .
-This feature seems to not work on many different laptops,
-including the Libretto 30CT and 50CT.
-.It Fl e Ar enable
-Enable or disable APM functions of the computer,
-depending on the boolean
-.Ar enable
-argument.
-.It Fl h Ar enable
-Depending on the boolean value of
-.Ar enable ,
-enable or disable the HLT instruction in the kernel context switch routine.
-These options are not necessary for almost all APM implementations,
-but for some implementations whose
-.Dq Pa Idle CPU
-call executes both CPU clock slowdown and HLT instruction,
-.Fl h Cm false
-is necessary to prevent the system from reducing its peak performance.
-See
-.Xr apm 4
-for details.
-.It Fl l
-Display the remaining battery percentage.
-If your laptop does not
-support this function, 255 is displayed.
-.It Fl r Ar delta
-Enable the resume wakeup timer, if the laptop supports it.
-This
-does not actually suspend the laptop, but if the laptop is suspended,
-and it supports resume from suspend, then it will be resumed after
-.Ar delta
-seconds (from when you run this command, not from when you suspend).
-.It Fl s
-Display the status of the APM support as an integer value.
-The values
-0 and 1 correspond to the
-.Dq disabled
-state or
-.Dq enabled
-state respectively.
-.It Fl t
-Display the estimated remaining battery lifetime in seconds.
-If
-it is unknown, -1 is displayed.
-.It Fl Z
-Transition the system into standby mode.
-This mode uses less power than
-full power mode, but more than suspend mode.
-Some laptops support
-resuming from this state on timer or Ring Indicator events.
-The
-output of
-.Nm
-tells what your laptop claims to support.
-.It Fl z
-Suspend the system.
-It is used by
-.Xr zzz 8 .
-.El
-.Pp
-If no options are specified,
-.Nm
-displays information and current status of APM in verbose mode.
-If multiple display options are given, the values are displayed one
-per line in the order given here.
-.Sh NOTES
-.Xr apmconf 8
-has been merged in
-.Nm
-and thus
-.Nm
-replaces all of its functionality.
-.Sh SEE ALSO
-.Xr apm 4 ,
-.Xr zzz 8
-.Sh AUTHORS
-.An Tatsumi Hosokawa Aq hosokawa@jp.FreeBSD.org
-.Sh BUGS
-Some APM implementations do not support parameters needed by
-.Nm .
-On such systems,
-.Nm
-displays them as unknown.
-.Pp
-Some APM implementations cannot handle events such as pushing the
-power button or closing the cover.
-On such implementations, the system
-.Ar must
-be suspended
-.Ar only
-by using
-.Nm
-or
-.Nm zzz .
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