ACPI モジュールのソースを表示

[[Category:電源管理]]
[[de:ACPI Module]]
[[en:ACPI modules]]
[[it:ACPI modules]]
[[zh-CN:ACPI modules]]
{{Related articles start}}
{{Related|acpid}}
{{Related|DSDT}}
{{Related articles end}}

[http://www.acpi.info/ ACPI のサイト] より:
:''ACPI (Advanced Configuration and Power Interface) は Hewlett-Packard, Intel, Microsoft, Phoenix, Toshiba によって共同開発されたオープンな工業規格です。''

ACPI モジュールは様々な ACPI パーツに対応するカーネルモジュールです。ACPI モジュールは特殊な ACPI の機能を有効にしたり {{ic|/proc}} や {{ic|/sys}} に情報を追加します。情報は [[acpid]] によって解析されてイベントなどを監視するアプリケーションで使われます。

==利用可能なモジュール==
以下は ACPI カーネルモジュールの簡単なリストです:
* ac (電源コネクタの状態)
* asus-laptop (useful on ASUS/medion laptops)
* battery (バッテリーの状態)
* bay (bay status)
* button (LID や POWER BUTTON などのボタンイベント)
* container (container status)
* dock (ドッキングステーションの状態)
* fan (ファンの状態)
* i2c_ec (EC SMBUs ドライバー)
* thinkpad_acpi (useful on Lenovo Thinkpad laptops)
* processor (プロセッサの状態)
* sbs (smart battery status)
* thermal (温度センサーの状態)
* toshiba_acpi (useful for Toshiba laptops)
* video (ビデオデバイスの状態)

complete list of your running kernel:
{{hc|$ ls -l /usr/lib/modules/$(uname -r)/kernel/drivers/acpi|<nowiki>
total 112
-rw-r--r-- 1 root root  2808 Aug 29 23:58 ac.ko.gz
-rw-r--r-- 1 root root  3021 Aug 29 23:58 acpi_ipmi.ko.gz
-rw-r--r-- 1 root root  3354 Aug 29 23:58 acpi_memhotplug.ko.gz
-rw-r--r-- 1 root root  4628 Aug 29 23:58 acpi_pad.ko.gz
drwxr-xr-x 2 root root  4096 Aug 29 23:59 apei
-rw-r--r-- 1 root root  7120 Aug 29 23:58 battery.ko.gz
-rw-r--r-- 1 root root  3700 Aug 29 23:58 button.ko.gz
-rw-r--r-- 1 root root  2181 Aug 29 23:58 container.ko.gz
-rw-r--r-- 1 root root  1525 Aug 29 23:58 custom_method.ko.gz
-rw-r--r-- 1 root root  1909 Aug 29 23:58 ec_sys.ko.gz
-rw-r--r-- 1 root root  2001 Aug 29 23:58 fan.ko.gz
-rw-r--r-- 1 root root  1532 Aug 29 23:58 hed.ko.gz
-rw-r--r-- 1 root root  3241 Aug 29 23:58 pci_slot.ko.gz
-rw-r--r-- 1 root root 17742 Aug 29 23:58 processor.ko.gz
-rw-r--r-- 1 root root  3073 Aug 29 23:58 sbshc.ko.gz
-rw-r--r-- 1 root root  7098 Aug 29 23:58 sbs.ko.gz
-rw-r--r-- 1 root root  6311 Aug 29 23:58 thermal.ko.gz
-rw-r--r-- 1 root root  8891 Aug 29 23:58 video.ko.gz
</nowiki>}}

==適切なモジュールの選択== 
You have to try yourself which module works for your machine:
{{bc|# modprobe <yourmodule>}}
then check if the module is supported on your hardware by using
{{bc|$ dmesg}}
{{Tip| It may help to add a grep text search to narrow your results.}}
 $ dmesg | grep acpi
 [    0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
 [    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x04] enabled)
 [    0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
 [    0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x05] enabled)
 [    0.000000] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
 [    0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
 [    0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
 [    0.000000] ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
 [    5.066752] ACPI: acpi_idle yielding to intel_idle
 [    5.438998] acpi device:04: registered as cooling_device4

Add the working ones to configuration files in {{ic|/etc/modules-load.d}} according to the pattern described in {{ic|man modules-load.d}}.

== 情報の取得 == 
バッテリー情報を読み出すには、[[公式リポジトリ]]の {{pkg|acpi}} パッケージを[[インストール]]して次を実行:
 acpi -i

Using {{ic|/proc}} to store ACPI information has been discouraged and deprecated since Linux 2.6.24. The same data is available in {{ic|/sys}} now, and interested parties can (should) subscribe to ACPI events from the kernel via netlink. For example, for battery:
 /sys/class/power_supply/BAT0/

==トラブルシューティング==
===DSDT fix===
If problems with power management persist despite having loaded the proper modules, a Linux-unfriendly [http://en.wikipedia.org/wiki/DSDT#ACPI_Tables DSDT] might be the cause. See the wiki article on [[DSDT]].
===ACPI fix for notebooks===
Sometimes you see "ACPI: EC: input buffer is not empty, aborting transaction". This is a problem with ACPI, more specifically an incompatibility of the BIOS. There are four ways to solve this:

1. Update your BIOS.

2. "Easy" Put {{ic|1=acpi=off}} in the kernel line in your bootloader's configuration file, but that will kill all ACPI functionality like battery charging and power saving.

3. In some cases (such as [http://ubuntuforums.org/showthread.php?p=8030130#10 here]) the following has been reported to solve the issue. However, screen brightness may no longer be fully controllable.
 $ xset dpms force off

4. "Hard" build your kernel with patch [https://bugs.launchpad.net/ubuntu/+source/linux/+bug/578506 bugs.launchpad.net].

If notebook does not start, just remove the AC adapter and battery for 5 seconds and start without AC!

== 参照 ==

* [[Wikipedia:ja:Advanced Configuration and Power Interface]]