Difference between revisions of "How to make use of Graphics Chips Power Management features"
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*[http://www.ati.com/products/pdf/powerplaywp2.pdf Marketing information from ATI] | *[http://www.ati.com/products/pdf/powerplaywp2.pdf Marketing information from ATI] | ||
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Revision as of 08:53, 24 July 2005
Contents
Power Saving With A Framebuffer Console
In order to use the dynamic GPU clock-scaling similar to what X.org has, you need to use the radeonfb kernel module. You'll need to enable the CONFIG_FB_RADEON in your kernel configuration. If setup correctly you should see something like the following in your kernel log:
radeonfb: Dynamic Clock Power Management enabled
DynamicClocks in the Radeon Xorg driver
The xorg X server has support for a power saving feature from ATI called PowerPlay. Xorg calls this feature DynamicClocks. It can be enabled in the server by adding Option "DynamicClocks" "on" in the Device section in /etc/X11/xorg.conf
Section "Device"
Identifier "Videocard0"
Driver "radeon"
VendorName "IBM Thinkpad"
BoardName "ATI Radeon Mobility M9"
Option "DynamicClocks" "on"
EndSection
With this option enabled, the X11 server should print (/var/log/Xorg.0.log):
(**) RADEON(0): Option "DynamicClocks" "on" (II) RADEON(0): Dynamic Clock Scaling Enabled
How to use it
After enabling it, my first question was how do I control it? After reading about it, the answer is: you don't have to, it manages the power consumption for you.\
X.org on Debian
Because debian doesn't have X.org yet - Installing a non-intrusive X.org server on Debian.
Update: X.org has made it into Debian. See: [1]
There are also sarge backports available here or here.
Add the following line to your repository list:
deb http://people.debian.org/~nobse/xorg-x11/ sarge main
