1 .\" LP (Laptop Package)
3 .\" Copyright (c) 1994 by Tatsumi Hosokawa <hosokawa@jp.FreeBSD.org>
5 .\" This software may be used, modified, copied, and distributed, in
6 .\" both source and binary form provided that the above copyright and
7 .\" these terms are retained. Under no circumstances is the author
8 .\" responsible for the proper functioning of this software, nor does
9 .\" the author assume any responsibility for damages incurred with its
11 .\" $FreeBSD: src/usr.sbin/apm/apm.8,v 1.16.2.7 2003/05/07 17:42:02 tobez Exp $
12 .\" $DragonFly: src/usr.sbin/apm/apm.8,v 1.5 2006/02/17 19:40:10 swildner Exp $
21 .Nd control the APM BIOS and display its information
35 controls the Intel / Microsoft APM (Advanced Power Management) BIOS and
36 displays the current status of APM on laptop PCs.
39 utility suspends the system by controlling APM.
41 The following options are available for
43 (no options are available for
45 If no options are specified,
47 displays information and current status of APM in verbose mode.
48 If multiple display options are given, the values are displayed one
49 per line in the order given here.
50 .Bl -tag -width indent
52 Display the current AC-line status as an integer value. The values
53 0, 1 and 2 correspond to the
61 Display an integer value reflecting the current battery status.
62 The values 0, 1, 2, 3, correspond to the
72 Disable/enable suspending of the display separately from a normal suspend
73 using the boolean value for
75 This feature seems to not work on many different laptops,
76 including the Libretto 30CT and 50CT.
78 Enable or disable APM functions of the computer,
79 depending on the boolean
83 Depending on the boolean value of
85 enable or disable the HLT instruction in the kernel context switch routine.
86 These options are not necessary for almost all APM implementations,
87 but for some implementations whose
89 call executes both CPU clock slowdown and HLT instruction,
91 is necessary to prevent the system from reducing its peak performance.
96 Display the remaining battery percentage. If your laptop does not
97 support this function, 255 is displayed.
99 Enable the resume wakeup timer, if the laptop supports it. This
100 doesn't actually suspend the laptop, but if the laptop is suspended,
101 and it supports resume from suspend, then it will be resumed after
103 seconds (from when you run this command, not from when you suspend).
105 Display the status of the APM support as an integer value. The values
106 0 and 1 correspond to the
112 Display the estimated remaining battery lifetime in seconds. If
113 it is unknown, -1 is displayed.
115 Transition the system into standby mode. This mode uses less power than
116 full power mode, but more than suspend mode. Some laptops support
117 resuming from this state on timer or Ring Indicator events. The
120 tells what your laptop claims to support.
132 replaces all of its functionality.
136 .An Tatsumi Hosokawa Aq hosokawa@jp.FreeBSD.org
138 Some APM implementations do not support parameters needed by
142 displays them as unknown.
144 Some APM implementations cannot handle events such as pushing the
145 power button or closing the cover. On such implementations, the system