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>12.19. ACPI</H1
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="AEN2932"
></A
>12.19.1. Related Documentation</H2
><P
>&#13;<P
></P
><OL
TYPE="1"
><LI
><P
>&#13; <A
HREF="http://xtrinsic.com/geek/articles/acpi.phtml"
TARGET="_top"
>ACPI-HOWTO I</A
>
by Emma Jane Hogbin
</P
></LI
><LI
><P
>&#13; <A
HREF="http://www.columbia.edu/~ariel/acpi/acpi_howto.txt"
TARGET="_top"
>ACPI-HOWTO II</A
>
by Ariel Glenn. This document describes how to compile, install, and
use the <SPAN
CLASS="acronym"
>ACPI</SPAN
> driver for Linux and its associated applications.
</P
></LI
><LI
><P
>&#13; <A
HREF="http://www.cpqlinux.com/acpi-howto.html"
TARGET="_top"
>ACPI-HOWTO III</A
>
</P
></LI
><LI
><P
>&#13; <A
HREF="http://acpi.sourceforge.net/wiki"
TARGET="_top"
>ACPI4Linux Project</A
>
and its
<A
HREF="http://acpi.sourceforge.net/wiki"
TARGET="_top"
>Wiki</A
>
</P
></LI
><LI
><P
>&#13; <A
HREF="http://www.acpi.info/"
TARGET="_top"
>ACPI Info</A
> provides the
ACPI specification.
</P
></LI
><LI
><P
>&#13; <A
HREF="mobile-guide-p2c1s1-cpu.html"
>Section 12.3</A
> the CPU chapter of this guide
</P
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>
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><DIV
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CLASS="sect2"
><A
NAME="AEN2956"
></A
>12.19.2. ACPI Details</H2
><P
>&#13; <SPAN
CLASS="acronym"
>ACPI</SPAN
> stands for <EM
>Advanced Configuration and
Power Interface</EM
>. This is a specification by Toshiba, Intel
and Microsoft. Besides many other things it also defines power
management. This is why it is often compared to APM.
</P
><P
>&#13; You might use the following parameters (with the appropriate changes)
in your boot loader configuration file (e.g. <TT
CLASS="filename"
>/etc/lilo.conf</TT
>
to experiment with <SPAN
CLASS="acronym"
>ACPI</SPAN
> and APM, when compiled in the same kernel.
Usage of APM and <SPAN
CLASS="acronym"
>ACPI</SPAN
> at the same time doesn't work, see Kernel docs for
details.
<TABLE
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><TD
><FONT
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><PRE
CLASS="programlisting"
>&#13;append="acpi=on apm=off"
</PRE
></FONT
></TD
></TR
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>
</P
><P
>&#13; The
<A
HREF="http://sourceforge.net/projects/acpi"
TARGET="_top"
>Linux ACPI Project</A
>
is committed to the development of fundamental ACPI (Advanced Configuration and Power
Interface) components for Linux. This includes a generic ACPI table parser, AML
interpreter, bus and device drivers, policy, user interface, and support tools.
</P
><P
>&#13; The
<A
HREF="http://www.netego.de/hpc?p=acpipower&#38;l=en"
TARGET="_top"
>E-AcpiPower</A
>
epplet is based on E-Power. It is modified to read
battery status information using the new acpi kernel module, making it much
more accurate and reliable than the old APM method.
</P
><P
>&#13; <A
HREF="http://rffr.de/acpi"
TARGET="_top"
>TCL/TK script</A
>
which allows setting the ACPI CPU performance
state using a graphical interface under Linux.
</P
><P
>&#13; <A
HREF="http://grahame.angrygoats.net/acpi.shtml"
TARGET="_top"
>Linux ACPI client</A
>
is a command-line tool, similar to the <B
CLASS="command"
>apm</B
>
command, that provides information on battery status, AC power, and
thermal readings.
</P
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