1 |
Hi, |
2 |
|
3 |
On Tue, Jun 23, 2009 at 04:44, Alan McKinnon<alan.mckinnon@×××××.com> wrote: |
4 |
> On Monday 22 June 2009 15:56:47 Mike Mazur wrote: |
5 |
>> <SNIP> |
6 |
>> I noticed some issues with the power management setup I had when I |
7 |
>> upgraded kernels over the last few months. This past weekend I decided |
8 |
>> to crack down on this to see whether they could be fixed. I visited |
9 |
>> the Gentoo Power Management Guide[1] again and re-traced the setup to |
10 |
>> verify my system's behavior. |
11 |
> |
12 |
> Dump cpufreqd. Use just the ondemand governor instead and get rid of the rest. |
13 |
> |
14 |
> <SNIP> |
15 |
> |
16 |
> That sounds like the conservative governor, the worst one of the lot. It |
17 |
> forces the cpu to rapidly change state, and do it often. Changing C state is |
18 |
> expensive, do it as seldom as you can. Just use ondemand all the time. |
19 |
|
20 |
You mean set the default governor to "ondemand" in the kernel and |
21 |
leave it at that regardless of whether running on batter or AC power? |
22 |
|
23 |
> |
24 |
>> The third issue seems to be with power management of my wireless card. |
25 |
>> I have the iwl3945 wireless card. In older version of the kernel |
26 |
>> (2.6.25 and before, I believe) this card was managed by a daemon in |
27 |
>> userspace. After that the driver was merged into the kernel. I noticed |
28 |
>> recently that the entry in /etc/conf.d/net (as per the Power |
29 |
>> Management Guide) causes this error when the interface comes up: |
30 |
> |
31 |
> iwl3945 does not (yet) support this to the best of my knowledge. It also |
32 |
> doesn't work here either. |
33 |
|
34 |
Alright, this makes sense I guess. |
35 |
|
36 |
Still one issue remains -- why are my RC states not automatically |
37 |
switched between default and battery even though my acpid setup is |
38 |
right and works (according to the log messages)? |
39 |
|
40 |
Thanks, |
41 |
Mike |