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
12 .\" $FreeBSD: src/usr.sbin/apm/apm.8,v 1.16.2.7 2003/05/07 17:42:02 tobez Exp $
20 .Nd control the APM BIOS and display its information
34 controls the Intel / Microsoft APM (Advanced Power Management) BIOS and
35 displays the current status of APM on laptop PCs.
38 utility suspends the system by controlling APM.
40 The following options are available for
42 (no options are available for
44 If no options are specified,
46 displays information and current status of APM in verbose mode.
47 If multiple display options are given, the values are displayed one
48 per line in the order given here.
49 .Bl -tag -width indent
51 Display the current AC-line status as an integer value. The values
52 0, 1 and 2 correspond to the
60 Display an integer value reflecting the current battery status.
61 The values 0, 1, 2, 3, correspond to the
71 Disable/enable suspending of the display separately from a normal suspend
72 using the boolean value for
74 This feature seems to not work on many different laptops,
75 including the Libretto 30CT and 50CT.
77 Enable or disable APM functions of the computer,
78 depending on the boolean
82 Depending on the boolean value of
84 enable or disable the HLT instruction in the kernel context switch routine.
85 These options are not necessary for almost all APM implementations,
86 but for some implementations whose
88 call executes both CPU clock slowdown and HLT instruction,
90 is necessary to prevent the system from reducing its peak performance.
95 Display the remaining battery percentage. If your laptop does not
96 support this function, 255 is displayed.
98 Enable the resume wakeup timer, if the laptop supports it. This
99 doesn't actually suspend the laptop, but if the laptop is suspended,
100 and it supports resume from suspend, then it will be resumed after
102 seconds (from when you run this command, not from when you suspend).
104 Display the status of the APM support as an integer value. The values
105 0 and 1 correspond to the
111 Display the estimated remaining battery lifetime in seconds. If
112 it is unknown, -1 is displayed.
114 Transition the system into standby mode. This mode uses less power than
115 full power mode, but more than suspend mode. Some laptops support
116 resuming from this state on timer or Ring Indicator events. The
119 tells what your laptop claims to support.
131 replaces all of its functionality.
135 .An Tatsumi Hosokawa Aq Mt hosokawa@jp.FreeBSD.org
137 Some APM implementations do not support parameters needed by
141 displays them as unknown.
143 Some APM implementations cannot handle events such as pushing the
144 power button or closing the cover. On such implementations, the system