Novell LINUX ENTERPRISE SERVER 10 - INSTALLATION AND ADMINISTRATION 11-05-2007, Installation Manual

Page: 526 / 982

/proc/acpi/info
General information about ACPI.
/proc/acpi/alarm
Here, specify when the system should wake from a sleep state. Currently, this feature
is not fully supported.
/proc/acpi/sleep
Provides information about possible sleep states.
/proc/acpi/event
All events are reported here and processed by the Powersave daemon
(
powersaved
). If no daemon accesses this file, events, such as a brief click on
the power button or closing the lid, can be read with
cat /proc/acpi/event
(terminate with
Ctrl
+
C
).
/proc/acpi/dsdt
and
/proc/acpi/fadt
These files contain the ACPI tables DSDT (differentiated system description table)
and FADT (fixed ACPI description table). They can be read with
acpidmp
,
acpidisasm
, and
dmdecode
. These programs and their documentation are lo-
cated in the package
pmtools
. For example,
acpidmp DSDT | acpidisasm
.
/proc/acpi/ac_adapter/AC/state
Shows whether the AC adapter is connected.
/proc/acpi/battery/BAT*/{alarm,info,state}
Detailed information about the battery state. The charge level is read by comparing
the
last full capacity
from
info
with the
remaining capacity
from
state
. A more comfortable way to do this is to use one of the special pro-
grams introduced in Section 28.3.3, “ACPI Tools” (page 512). The charge level at
which a battery event (such as warning, low and critical) is triggered can be specified
in
alarm
.
/proc/acpi/button
This directory contains information about various switches, like the laptop lid and
buttons.
/proc/acpi/fan/FAN/state
Shows if the fan is currently active. Activate or deactivate the fan manually by
writing
0
(on) or
3
(off) into this file. However, both the ACPI code in the kernel
508 Installation and Administration