Lenovo ThinkPad i Series 1157 ThinkPad 570 On-line User's Guide - Page 46

Considerations when using a power management mode, Considerations for suspend mode

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Considerations when using a power management mode When you use a power management mode, you need to consider a few points, especially if you are using the network. Considerations for suspend mode Consider the following before using suspend mode: Before playing audio, it is better to turn off any automatic timers that put the computer into suspend or hibernation mode. In addition, it is better to stop playing audio before entering suspend or hibernation mode. If the computer enters suspend or hibernation mode, data from a running audio program might be lost. Attached devices, such as a printer or serial device, stop running when the computer enters suspend mode. When you resume normal operation, the output might differ from what you expect, because the device might be reset or lose its configuration settings. Sometimes you might want to use the computer with the LCD closed-for example, when an external monitor and keyboard are used. In such a case, power on the computer with the LCD closed, or use the ThinkPad Configuration program to set the computer not to enter suspend mode when the LCD is closed. If the computer resumes normal operation by reaching the ThinkPad Configuration timer setting or because of an incoming call, only a blank screen is displayed. To display a power-on password prompt, press any key or move your pointing device. If you are using some communication cards and the computer is powered with ac power, your computer enters standby mode rather than suspend mode. If you are using other PC Cards and the computer enters suspend mode, all application programs stop. For some PC Cards, power to the PC Cards might also turn off. If the computer is powered with battery power, the computer turns power off to the PC Card, and communication stops for communication PC Cards, so the duration of suspend mode is longer. 40 IBM ThinkPad 570 Online Book

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Considerations when using a power management mode
When you use a power management mode, you need to consider a
few points, especially if you are using the network.
Considerations for suspend mode
Consider the following before using suspend mode:
Before playing audio, it is better to turn off any automatic timers
that put the computer into suspend or hibernation mode.
In
addition, it is better to stop playing audio before entering
suspend or hibernation mode.
If the computer enters suspend or
hibernation mode, data from a running audio program might be
lost.
Attached devices, such as a printer or serial device, stop running
when the computer enters suspend mode.
When you resume
normal operation, the output might differ from what you expect,
because the device might be reset or lose its configuration
settings.
Sometimes you might want to use the computer with the LCD
closed—for example, when an external monitor and keyboard are
used.
In such a case, power on the computer with the LCD
closed, or use the ThinkPad Configuration program to set the
computer not to enter suspend mode when the LCD is closed.
If the computer resumes normal operation by reaching the
ThinkPad Configuration timer setting or because of an incoming
call, only a blank screen is displayed.
To display a power-on
password prompt, press any key or move your pointing device.
If you are using some communication cards and the computer is
powered with ac power, your computer enters standby mode
rather than suspend mode.
If you are using other PC Cards and the computer enters
suspend mode, all application programs stop.
For some PC
Cards, power to the PC Cards might also turn off.
If the computer is powered with battery power, the computer
turns power off to the PC Card, and communication stops for
communication PC Cards, so the duration of suspend mode is
longer.
40
IBM ThinkPad 570 Online Book