HP ProBook 4525s HP ProBook Notebook PC User Guide - Linux - Page 41

Power management, Setting power options, Using power-saving states, Initiating and exiting Suspend,

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4 Power management Setting power options Using power-saving states The computer has two power-saving states enabled at the factory: Suspend and Hibernation. When Suspend is initiated, the power light blinks and the screen clears. Your work is saved to memory, letting you exit Suspend faster than exiting Hibernation. If the computer is in the Suspend state for an extended period or if the battery reaches a critical battery level while in the Suspend state, the computer initiates Hibernation. When Hibernation is initiated, your work is saved to a hibernation file on the hard drive and the computer turns off. CAUTION: To prevent possible audio and video degradation, loss of audio or video playback functionality, or loss of information, do not initiate Suspend or Hibernation while reading from or writing to a disc or an external media card. NOTE: You cannot initiate any type of networking connection or perform any computer functions while the computer is in the Suspend state or in Hibernation. Initiating and exiting Suspend The system is set at the factory to initiate Suspend after 15 minutes of inactivity when running on battery power and 30 minutes of inactivity when running on external power. Power settings and timeouts can be changed using Power Management in Control Center. With the computer on, you can initiate Suspend in any of the following ways: ● Click Computer, click Shutdown, and then click Suspend. ▲ To exit Suspend, briefly press the power button. When the computer exits Suspend, the power light turns on and your work returns to the screen where you stopped working. Initiating and exiting Hibernation Power settings and timeouts can be changed using Power Management in Control Center. With the computer on, you can initiate Hibernation in any of the following ways: ● Briefly press the power button. ● Click Computer, click Shutdown, and then click Hibernation. ● Click the Power icon located on the far right of the task bar, and then click Hibernation. ▲ To exit Hibernation: Briefly press the power button. The power light turns on and your work returns to the screen where you stopped working. Setting power options 31

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4
Power management
Setting power options
Using power-saving states
The computer has two power-saving states enabled at the factory: Suspend and Hibernation.
When Suspend is initiated, the power light blinks and the screen clears. Your work is saved to memory,
letting you exit Suspend faster than exiting Hibernation. If the computer is in the Suspend state for an
extended period or if the battery reaches a critical battery level while in the Suspend state, the computer
initiates Hibernation.
When Hibernation is initiated, your work is saved to a hibernation file on the hard drive and the computer
turns off.
CAUTION:
To prevent possible audio and video degradation, loss of audio or video playback
functionality, or loss of information, do not initiate Suspend or Hibernation while reading from or writing
to a disc or an external media card.
NOTE:
You cannot initiate any type of networking connection or perform any computer functions while
the computer is in the Suspend state or in Hibernation.
Initiating and exiting Suspend
The system is set at the factory to initiate Suspend after 15 minutes of inactivity when running on battery
power and 30 minutes of inactivity when running on external power.
Power settings and timeouts can be changed using Power Management in Control Center.
With the computer on, you can initiate Suspend in any of the following ways:
●
Click
Computer
, click
Shutdown
, and then click
Suspend
.
▲
To exit Suspend, briefly press the power button.
When the computer exits Suspend, the power light turns on and your work returns to the screen
where you stopped working.
Initiating and exiting Hibernation
Power settings and timeouts can be changed using Power Management in Control Center.
With the computer on, you can initiate Hibernation in any of the following ways:
●
Briefly press the power button.
●
Click
Computer
, click
Shutdown
, and then click
Hibernation
.
●
Click the
Power
icon located on the far right of the task bar, and then click
Hibernation
.
▲
To exit Hibernation:
Briefly press the power button.
The power light turns on and your work returns to the screen where you stopped working.
Setting power options
31