The YaST power management module can configure all power management settings described above. When starting the module from the YaST Control Center with 16.1. “Scheme Selection”.-> , the first dialog of the module opens. It is shown in Figure
In this dialog, select the schemes to use for battery operation and AC operation. To add or modify the schemes, click 16.2. “Overview of Existing Schemes”., which opens an overview of the existing schemes like that shown in Figure
In the scheme overview, select the scheme to modify then click 16.3. “Adding a Scheme”.. To create a new scheme, click . The dialog that opens is the same in both cases and is shown in Figure
First, enter a suitable name and description for the new or edited scheme. Determine if and how the CPU performance should be controlled for this scheme. Decide if and to what extent frequency scaling and throttling should be used. In the following dialog for the hard disk, define a Enable Screen Saver to reduce the energy consumption of the display when the computer is not used. Enable Display Power Management allows you to control the time after which the display should enter the standby, suspend, or power-off mode. Complete all settings for the scheme and click to return to the start dialog. In the start dialog, assign the custom scheme to one of the two operating modes. To activate your settings, exit this dialog with .for maximum performance or for energy saving. The controls the noise level of the hard disk (supported by few hard disks). The determines the cooling method to use. Unfortunately, this type of thermal control is rarely supported by the BIOS. Read /usr/share/doc/packages/powersave/README.thermal to learn how you can use the fan and passive cooling methods. Click to proceed to the dialog for configuring the power saving mode of the connected display. Activate the check box
Global power management settings can also be made from the initial dialog using 16.4. “Battery Charge Level”., , or . Click to access the dialog for the battery charge level, shown in Figure
The BIOS of your system notifies the operating system whenever the charge level drops under certain configurable limits. In this dialog, define three limits:, , and . Specific actions are triggered when the charge level drops under these limits. Usually, the first two states merely trigger a notification to the user. The third critical level triggers a shutdown, because the remaining energy is not sufficient for continued system operation. Select suitable charge levels and the desired actions then click to return to the start dialog.
Access the dialog for configuring the ACPI buttons using 16.5. “ACPI Settings”. The settings for the ACPI buttons determine how the system should respond to certain switches. Configure the system response to pressing the power button, pressing the sleep button, and closing the laptop lid. Click to complete the configuration and return to the start dialog.. It is shown in Figure
Clickto enter a dialog in which to determine if and how users of this system may use the suspend or standby functionality. Click to return to the main dialog. Click again to exit the module and confirm your power management settings.