Changeset 31fc886 for general

Timestamp:

09/17/2015 05:00:55 AM (9 years ago)

Author:

Bruce Dubbs <bdubbs@…>

Branches:

10.0, 10.1, 11.0, 11.1, 11.2, 11.3, 12.0, 12.1, 7.10, 7.8, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 9.0, 9.1, basic, bdubbs/svn, elogind, kea, ken/TL2024, ken/inkscape-core-mods, ken/tuningfonts, lazarus, lxqt, nosym, perl-modules, plabs/newcss, plabs/python-mods, python3.11, qt5new, rahul/power-profiles-daemon, renodr/vulkan-addition, trunk, upgradedb, xry111/intltool, xry111/llvm18, xry111/soup3, xry111/test-20220226, xry111/xf86-video-removal

Children:

2029b72

Parents:

987cd78

Message:

Add kernel options for suspend and hibernate.
Minor xfce updates.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@16420 af4574ff-66df-0310-9fd7-8a98e5e911e0

File:

• general/sysutils/pm-utils.xml (modified) (2 diffs)

general/sysutils/pm-utils.xml

@@ -83 +83 @@
       <xref linkend="hdparm"/>,
       <xref linkend="wireless_tools"/>,
-      <ulink url="https://www.kernel.org/pub/software/network/ethtool/">ethtool</ulink> and
-      <!-- both http://www.codon.org.uk/~mjg59/vbetool/ and
-           http://www.srcf.ucam.org/~mjg59/vbetool/ are down -->
+      <ulink url="https://www.kernel.org/pub/software/network/ethtool/">ethtool</ulink>, and
       <ulink url="http://ftp.de.debian.org/debian/pool/main/v/vbetool/">vbetool</ulink>
-      <!-- radeontool, deprecated? -->
     </para>
 
@@ -93 +90 @@
       <ulink url="&blfs-wiki;/pm-utils"/>
     </para>
+  </sect2>
+
+  <sect2 role="kernel"  id="pm-utils-kernel">
+    <title>Kernel Configuration</title>
+
+    <para>
+       If needed, enable the following options in the kernel configuration and
+       recompile the kernel:
+    </para>
+
+    <screen><literal>Power management and ACPI options ---&gt;
+    &lt;*&gt; Suspend to RAM and standby            [CONFIG_SUSPEND]
+    &lt;*&gt; Hibernation (aka 'suspend to disk')   [CONFIG_HIBERNATION]</literal></screen>
+
+    <para>
+      Suspend to RAM allows the system to enter sleep states in which main
+      memory is powered and thus its contents are preserved. The method cuts
+      power to most parts of the machine aside from the RAM.  Because of the
+      large power savings, it is advisable for laptops to automatically enter
+      this mode when the computer is running on batteries and the lid is closed
+      (or the user is inactive for some time).
+    </para>
+      
+    <para>
+      Suspend to disk (Hibernation) saves the machine's state into swap space
+      and completely powers off the machine. When the machine is powered on,
+      the state is restored. Until then, there is zero power consumption.
+      Suspend to RAM and hibernation are normally appropriate for portable
+      devices such as laptops, but can be used on workstations.  The capability
+      is not really appropriate for servers.
+    </para>
+
+    <para>
+      To use hibernation, the kernel parameter
+      resume=/dev/&lt;swap_partition&gt; has to be used on the kernel command
+      line (in grub.cfg).  The swap partition should be at least the size of
+      the physical RAM on the system.
+    </para>
+
+    <indexterm zone="pm-utils pm-utils-kernel">
+      <primary sortas="d-pm-utils">pm-utils</primary>
+    </indexterm>
+
   </sect2>