Power management support within the Linux kernel for the ATI Radeon DRM driver has been in development for months and gone through several revisions, but with the forthcoming Linux 2.6.34 kernel there is initial ATI KMS power management support. For making the power management situation even better...
Hi, I have been trying to understand this with google for a day now, it's time to ask. I don't fully understand how the power management works in ubuntu desktop and it's derivatives.
My question is which services influence the computer when no user is logged in but the X environment is loaded?
Phoronix: "With the ATI Linux power management finally coming to fruition within the Linux kernel for its kernel mode-setting / DRM driver, we have decided to take a close look at how this power management support is working in the real world."
I'm trying to figure this out, and not having any luck.
Under System | Preferences | Power Management
The Power Management Preferences dialog has a tab for 'On AC Power' and 'On Battery Power'.
Each of those tabs has a checkbox marked 'Dim Display when Idle'.
With each release cycle the Linux kernel and the distributions implement new improvements in terms of laptop power management. Therefore even plain standard installations can show quite good results.
Additional possibilities to save battery power are easily found on the web with the search engine of your choice.
What are the default settings for power management?
I've messed with it a little and I noticed my screen doesnt lock when I leave my computer inactive for a certain period of time.
Also the 2 options in the Power Management."
I have searched the web for the answer of this question but couldn't find a clear answer. Best answer I found was as follows:
kondemand is a kernel thread that belongs to the ondemand governor of
cpufreq subsystem, which changes the p-states of the system, based on
the utilization statistics.
I have read (I think) all of the relevant wiki pages. (But I could be wrong - they seem to criss-cross in various ways and I go in circles!) I've also googled what I can, read the man pages and been through all the config files I could find.What I planned to do: do power management with acpid and laptop-mode-tools with pm-utils, which I believed complemented the others.
I have seen in some version of Ubuntu that instead of making a huge change to update to the latest kernel, they take some of the good stuff out of it, for the sake of stability and put it on a previous version.
In this case, kernel 3.3 has seen some very good power management enhancements that are not all found in the kernel 3.2.
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