Awakening by a Signal of Internal Devices. Part II

  • A parameter “PCI Master” (Wake Up Events PCI Master) enables to wake up a computer if any of its devices located in PCI-slot is active. It has got two values: On and Off. Using this parameter, it is possible, for example, to block the transition to the power saving mode if a sound card is active. But it is recommended to turn this parameter on only when SCSI-controllers or IDE RAID-controllers are used. In all other cases this parameter should be turned off.
  • A parameter “IRQs Activity Monitoring” enables to specify interruptions with which a computer should not enter the power saving mode or should initiate exiting this state. This parameter has got several values: Auto, Manual and Disabled. In some versions of BIOS, this parameter is a heading of a section where the individual values for each interruption can be specified. When selecting a value “Manual”, a set of parameter becomes available. They allow making it possible to monitor interruptions from the 3rd to the 15th. Each of these parameters has got the following values: Enabled and Disabled. The names of devices related to the appropriate interruptions or “Primary” and “Secondary” values that directly address a channel of interrupt controller can also be used as the values of these parameters. To monitor the activeness of interruptions, you may also use the parameters “PME Events Wake Up” or “Wake On PME” which have got the following values: Enabled and Disabled.