Power States And State Transitions; Figure 6-1 Power Management State Transitions - Fujitsu stylistic lt Reference Manual

Power States and State Transitions

The system manages power consumption by performing transitions between system power states, or
modes. State transitions can be triggered by timeouts configured in the BIOS, and other types of system
activity. Figure 6-1 shows system power states, transition paths and some typical events that trigger a
transition from one state to the next. You can configure the pen tablet to utilize some or all of these states
by setting power management options in the BIOS. Table 6-2 describes each power state. These states,
and BIOS options that affect them, are also described in further detail in "Power Management States and
BIOS Configuration Options" on page 6-5.
OFF
MODE
Suspend/Resume button
pressed (if Power On/Off
Suspend/Resume
button pressed
Resume on Time occurs
Resume On Modem Ring
SUSPEND
MODE

Figure 6-1 Power Management State Transitions

Suspend/Resume
button pressed
OS Shutdown
selected in BIOS)
Save-to-Disk
Suspend request
Critically Low Battery
Suspend/Resume pressed
Suspend Timeout
Suspend Timeout
Suspend request
FULLY
ON
MODE
System activity
(interrupt)
System activity
(interrupt)
STANDBY
MODE
Power States and State Transitions
Idle Mode
timeout occurs
IDLE
MODE
Standby timeout
occurs
6
6-3