Laptop Mode and powernowd in Dapper
kentborg at borg.org
Thu Sep 7 14:21:03 UTC 2006
I am wondering about how to make my notebook run long and cool.
I have powernowd installed and laptop mode enabled (in
Wanting to control the powernowd settings I created
/etc/default/powernowd and put in it 'OPTIONS="-m2 -u90 -l40"'. The
idea is to be aggressive about saving power.
I have CPU Frequency Scaling Monitor installed on my menu bar.
When I am plugged in it will sometimes scale back to 600 MHz, but not
always. For example, as I type this my load is 0.20, 0.31, 0.45, yet
I am running at 1.3GHz. If I unplug power and plug it back in again
it scales back to 600MHz and stays there until some activity moves it
up. But then I let things die down, I watch the load fall back to
under 0.1 0.35 0.39, yet the speed stays at 1.3GHz. A few minutes
later I see the speed drop to 600 MHz for a short time when the load
isn't as low.
How do I get my CPU to only run fast (and hot) when needed?
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