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On Wednesday 24 June 2009 03:28:55 Mike Mazur wrote: |
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> Hi, |
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> |
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> On Tue, Jun 23, 2009 at 04:44, Alan McKinnon<alan.mckinnon@×××××.com> wrote: |
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> > On Monday 22 June 2009 15:56:47 Mike Mazur wrote: |
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> >> <SNIP> |
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> >> I noticed some issues with the power management setup I had when I |
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> >> upgraded kernels over the last few months. This past weekend I decided |
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> >> to crack down on this to see whether they could be fixed. I visited |
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> >> the Gentoo Power Management Guide[1] again and re-traced the setup to |
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> >> verify my system's behavior. |
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> > |
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> > Dump cpufreqd. Use just the ondemand governor instead and get rid of the |
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> > rest. |
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> > |
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> > <SNIP> |
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> > |
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> > That sounds like the conservative governor, the worst one of the lot. It |
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> > forces the cpu to rapidly change state, and do it often. Changing C state |
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> > is expensive, do it as seldom as you can. Just use ondemand all the time. |
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> |
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> You mean set the default governor to "ondemand" in the kernel and |
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> leave it at that regardless of whether running on batter or AC power? |
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|
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Yes. |
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|
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> >> The third issue seems to be with power management of my wireless card. |
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> >> I have the iwl3945 wireless card. In older version of the kernel |
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> >> (2.6.25 and before, I believe) this card was managed by a daemon in |
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> >> userspace. After that the driver was merged into the kernel. I noticed |
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> >> recently that the entry in /etc/conf.d/net (as per the Power |
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> >> Management Guide) causes this error when the interface comes up: |
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> > |
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> > iwl3945 does not (yet) support this to the best of my knowledge. It also |
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> > doesn't work here either. |
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> |
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> Alright, this makes sense I guess. |
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> |
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> Still one issue remains -- why are my RC states not automatically |
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> switched between default and battery even though my acpid setup is |
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> right and works (according to the log messages)? |
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|
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The simplest answer (usually the right one) is that you are probably grepping |
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for the wrong string. These things are subject to change and there's no easy |
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way for you to find out when it happens. |
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|
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-- |
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alan dot mckinnon at gmail dot com |
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