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1<?xml version='1.0' encoding="UTF-8"?> 1<?xml version='1.0' encoding="UTF-8"?>
2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> 2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/power-management-guide.xml,v 1.10 2005/03/19 16:48:25 yoswink Exp $ --> 3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/power-management-guide.xml,v 1.11 2005/04/18 19:19:27 dertobi123 Exp $ -->
4<guide link="power-management-guide.xml"> 4<guide link="power-management-guide.xml">
5<title>Power Management Guide</title> 5<title>Power Management Guide</title>
6 6
7<author title="Author"> 7<author title="Author">
8 <mail link="fragfred@gmx.de">Dennis Nienhüser</mail> 8 <mail link="fragfred@gmx.de">Dennis Nienhüser</mail>
15 15
16<!-- The content of this document is licensed under the CC-BY-SA license --> 16<!-- The content of this document is licensed under the CC-BY-SA license -->
17<!-- See http://creativecommons.org/licenses/by-sa/2.0 --> 17<!-- See http://creativecommons.org/licenses/by-sa/2.0 -->
18<license/> 18<license/>
19 19
20<version>1.20</version> 20<version>1.21</version>
21<date>2005-03-19</date> 21<date>2005-04-18</date>
22 22
23<chapter> 23<chapter>
24<title>Introduction</title> 24<title>Introduction</title>
25 25
26<section> 26<section>
318Some of these files must be executable. Last not least restart acpid to have 318Some of these files must be executable. Last not least restart acpid to have
319it recognize the changes. 319it recognize the changes.
320</p> 320</p>
321 321
322<pre caption="Finishing runlevel switching with acpid"> 322<pre caption="Finishing runlevel switching with acpid">
323<i># emerge powermgmt-base</i>
323<i># chmod +x /etc/acpi/switch_runlevel.sh</i> 324<i># chmod +x /etc/acpi/switch_runlevel.sh</i>
324<i># chmod +x /etc/acpi/actions/pmg_*</i> 325<i># chmod +x /etc/acpi/actions/pmg_*</i>
325<i># /etc/init.d/acpid restart</i> 326<i># /etc/init.d/acpid restart</i>
326</pre> 327</pre>
327 328
1229<e>A:</e> The ondemand governor is only included in recent kernel sources. Try 1230<e>A:</e> The ondemand governor is only included in recent kernel sources. Try
1230updating them. 1231updating them.
1231</p> 1232</p>
1232 1233
1233<p> 1234<p>
1234<e>Q:</e> Runlevel switching doesn't work - the script is not able to determine
1235the power source correctly.
1236</p>
1237
1238<p>
1239<e>A:</e> On some systems, the power source can't be determined by reading
1240<path>/proc/acpi/ac_adapter/*/state</path>. If it fails for you, create a
1241custom script <c>on_ac_power</c> or use the one from <c>powermgmt-base</c>.
1242An ebuild can be found in <uri
1243link="http://bugs.gentoo.org/show_bug.cgi?id=76516">Bug #76516</uri>. You
1244only have to emerge it, it works transparently with the above script.
1245</p>
1246
1247<p>
1248<e>Q:</e> Battery life time seems to be worse than before. 1235<e>Q:</e> Battery life time seems to be worse than before.
1249</p> 1236</p>
1250 1237
1251<p> 1238<p>
1252<e>A:</e> Check your BIOS settings. Maybe you forgot to re-enable some of the 1239<e>A:</e> Check your BIOS settings. Maybe you forgot to re-enable some of the

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