I got a question regarding the power saving options present in the radeon driver. OS being used is Ubuntu Karmic with the shipping radeon build (6.12.99), hardware is a laptop with an integrated 200M.
The manual descriptions for the options "DynamicPM" and "ClockGating" don't offer much explanation besides "reduces power usage". I would like to know exactly what they do and which one to use.
Right now I have both of them on (my xorg log confirms that they are being used) and I could immediately notice an increase in battery life, while performance stayed about the same as far as I can tell. What's the difference between the two? DynamicPM says it lowers power consumption while the system is idle which I guess simply means it downclocks the chip when there's no load on it; ClockGating isn't as descriptive but I assume it does the same. Are these two redundant options or do they do different things?
The manual descriptions for the options "DynamicPM" and "ClockGating" don't offer much explanation besides "reduces power usage". I would like to know exactly what they do and which one to use.
Right now I have both of them on (my xorg log confirms that they are being used) and I could immediately notice an increase in battery life, while performance stayed about the same as far as I can tell. What's the difference between the two? DynamicPM says it lowers power consumption while the system is idle which I guess simply means it downclocks the chip when there's no load on it; ClockGating isn't as descriptive but I assume it does the same. Are these two redundant options or do they do different things?
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