pm-utils-1.4.1
Power Management Utilities の概要
The Power Management Utilities
provide simple shell command line tools to suspend and hibernate
the computer. They can be used to run user supplied scripts on
suspend and resume.
![[注記]](../images/note.png)
注記
LFS や依存パッケージが本ブックに示す最新安定バージョンでなかった場合には、BLFS
開発版においては、パッケージのビルドや処理実行が適切に行われないことがあります。
パッケージ情報
Additional Downloads
Power Management Utilities の依存パッケージ
任意
xmlto-0.0.28 (man ページ生成のため)
任意 （実行時）
Hdparm-9.65, Wireless Tools-29, ethtool,
vbetool
カーネルの設定
必要に応じて、以下に示すカーネル設定オプションを有効にし、カーネルを再コンパイルします。
Power management and ACPI options --->
[*] Suspend to RAM and standby [SUSPEND]
[*] Hibernation (aka 'suspend to disk') [HIBERNATION]
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).
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.
To use hibernation, the kernel parameter
resume=/dev/<swap_partition> 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.
Power Management Utilities のインストール
First, fix several bugs and a couple of incompatibilities with
newer kernels:
patch -Np1 -i ../pm-utils-1.4.1-bugfixes-1.patch
以下のコマンドを実行して Power Management
Utilities をビルドします。
./configure --prefix=/usr \
--sysconfdir=/etc \
--docdir=/usr/share/doc/pm-utils-1.4.1 &&
make
このパッケージにテストスイートはありません。
root ユーザーになって以下を実行します。
make install
xmlto-0.0.28 をインストールしていない場合は root ユーザーになって、生成済の man ページをコピーします。
install -v -m644 man/*.1 /usr/share/man/man1 &&
install -v -m644 man/*.8 /usr/share/man/man8 &&
ln -sv pm-action.8 /usr/share/man/man8/pm-suspend.8 &&
ln -sv pm-action.8 /usr/share/man/man8/pm-hibernate.8 &&
ln -sv pm-action.8 /usr/share/man/man8/pm-suspend-hybrid.8
Power Management Utilities の設定
Suspend or resume functionality can be easily modified by
installing files into the /etc/pm/sleep.d directory. These files, known as
hooks, are run when the system is put into a sleep state or
resumed. Default hooks are located in /usr/lib/pm-utils/sleep.d, and user hooks should
be put in /etc/pm/sleep.d. See the
pm-action(8) man page for more information.
In order to use hibernation with GRUB and a swap partition, you need to add
kernel parameter resume=swap_partition (e.g.
resume=/dev/sda1) to the kernel line
in the /boot/grub/grub.cfg
configuration file.
パッケージ構成
インストールプログラム: on_ac_power, pm-hibernate, pm-is-supported,
pm-powersave, pm-suspend, pm-suspend-hybrid
インストールライブラリ: なし
インストールディレクトリ: /etc/pm, /usr/lib/pm-utils,
/usr/share/doc/pm-utils-1.4.1
概略説明
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on_ac_power
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is a script that determines whether the system is running
on AC power (rather than a battery)
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pm-hibernate
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is a symlink to pm-action script that puts the computer
into hibernate mode (the system is fully powered off and
system state is saved to disk)
|
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pm-is-supported
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is a script that checks whether power management features
such as suspend and hibernate are supported
|
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pm-powersave
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is a script that puts the computer into powersaving (low
power) mode
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pm-suspend
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is a symlink to pm-action script that puts the computer
into suspend mode (most devices are shut down and system
state is saved in RAM)
|
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pm-suspend-hybrid
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is a symlink to pm-action script that puts the computer
into hybrid-suspend mode (the system does everything it
needs to hibernate, but suspends instead of shutting
down)
|