設定裝置閒置時間

您可指定系統裝置（例如是螢幕）開始省電模式前，應先閒置的時間。做法是變更/etc/power.conf檔案的臨界值的欄位。

變更閒置時間的長度

1. 以高階使用者的身份，編輯/etc/power.conf 檔案。鍵入：

   example# vi /etc/power.conf

2. 修改相關的項目。

   如下所示，在/etc/power.conf 檔案中，鍵盤和滑鼠裝置的閒置臨界值已修改為300秒（5分鐘）。

   ---

   # Power Management Configuration File
   
   #
   
   # Putting an entry in this file will only be effective if the 
   
   # driver for the device supports device power management. 
   
   # After the file is modified, pmconfig(1M) command must be
   
   # executed to activate the new change.
   
   #
   
   # Fields must be separated by white space or semicolons.
   
   # Note that physical dependents are automatically considered
   
   # by the power management framework.
   
   # Name           Threshold(s)        Logical Dependent(s)
   
   /dev/kbd         300
   
   /dev/mouse       300
   
   
   
   # NOTE: The entries below are only used when no window
   
   # system is running. When running the window system, monitor
   
   # power management is done by the screen saver functions.
   
   
   
   /dev/fb          0 0        /dev/kbd    /dev/mouse
   
   
   
   # Auto-Shutdown  Idle(min)  Start/finish(hh:mm)  Behavior
   
   autoshutdown     30          9:00 9:00           default
   
   
   
   statefile        /.CPR

   ---

3. 鍵入下列文字，讓「電源管理」系統知道新的設定值：

   example# /usr/sbin/pmconfig

   執行pmconfig，依據臨界值，讓「電源管理」系統知道新的設定值，這些臨界值現在定義在/etc/power.conf檔案中。