若 /proc/apm 檔案存在的話, 表示系統的電源管理模式為: APM
執行 apm 指令可查詢目前電力狀況: AC on-line, battery status high: 100%
apm daemon 設定檔在: /etc/sysconfig/apmd
若 /proc/acpi 目錄存在的話, 表示系統的電源管理模式為: ACPI
以下是 FC3@Asus S5N (acpid-1.0.3-2) 的 ACPI 相關資訊:
| /proc/acpi/ac_adapter/AC0/state |
|
| state: on-line / off-line |
| |
|
| /proc/acpi/battery/BAT0/info |
|
| present: |
yes |
| design capacity: |
47300 mWh |
| last full capacity: |
36817 mWh |
| battery technology: |
rechargeable |
| design voltage: |
11100 mV |
| design capacity warning: |
4730 mWh |
| design capacity low: |
2365 mWh |
| capacity granularity 1: |
473 mWh |
| capacity granularity 2: |
473 mWh |
| model number: |
S5N |
| serial number: |
|
| battery type: |
LIon |
| OEM info: |
ASUSTEK |
| |
|
| /proc/acpi/battery/BAT0/state |
|
| present: |
yes |
| capacity state: |
ok |
| charging state: |
charging / charged |
| present rate: |
12001 mW |
| remaining capacity: |
34936 mWh |
| present voltage: |
12655 mV |
據說當 notebook 使用電池電力時, 輸入以下指令可增加約 5% 使用時間 (但效能會降低):
echo "1" > /proc/sys/vm/laptop_mode
