In openSUSE 11.4, the control of your CPU energy usage has been moved to the YaST Power Management module. This How To and FAQ Tells you how to install and enable this CPU control module. To begin, you must start the YaST Control Center and enter the root user password as normal. Then, proceed to:
YaST / Software / Software Management
http://thumbnails45.imagebam.com/13709/2794c4137085555.jpg](http://www.imagebam.com/image/2794c4137085555)
In Software Management, lets search on yast2-power:
http://thumbnails30.imagebam.com/13709/c2c95d137085584.jpg](http://www.imagebam.com/image/c2c95d137085584)
Check the yast2-power-management package and select the Accept Button on the bottom right to allow it to be installed. Once the package yast2-power-management has been installed, lets Exit YaST and restart the YaST Control Center again. This will allow the new YaST Power Module to appear, but it is not yet ready to be used. Now, we need to go into the Run Level Services as follows:
YaST / System / System Service (Runlevel)
In the System Services window select the Expert Mode Bullet and then find and select the service pm-profiler:
http://thumbnails22.imagebam.com/13709/ba1099137085574.jpg](http://www.imagebam.com/image/ba1099137085574)
Select the button on the bottom right and Enable the pm-profile Service and answer yes to the added services as requested. Select the button on the bottom left and Start the pm-profiler Servrce. You should get a good start with a 0 error return code. Now select the finish button on the bottom right and allow your selections to be saved. Now, it is time to use the new YaST power module. Please Go To:
YaST / System / Power Management
http://thumbnails45.imagebam.com/13709/c50d81137085567.jpg](http://www.imagebam.com/image/c50d81137085567)
In the YaST Power Management module, you have four selections. They are:
- Balanced Low Latency Computing
- Low Latency Computing
- Powersaving
- Default
For Desktop usage, you would most likely use the **Low Latency Computing **while if using a Laptop, the Powersaving settings would make the most sense. The **Balanced Low Latency Computing could be useful when used on a desktop or laptop. ** Default is what you start up as which does have some power savings enabled. On Laptops or any computer where heat is a problem or where high fan speed noise is a problem, you will want to select Powersaving. Once you have made your selection here, just press the Finish button on the bottom right for it to be accepted. I also might suggest you restart your PC just to make sure this setting is being used.
Thank You,