Re: ACPI + Laptop Power Management

[Ducrot Bruno <ducrot-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org>]

On Fri, Nov 21, 2003 at 02:07:14PM +0100, Luca Capello wrote:
> Hello Micha,
> 
> on 11/21/03 12:13, Micha Feigin wrote:
> | like said here, laptopmode is what you want since it holds back dirty
> | buffer flushes which is what you are experiencing. It will fire up the
> | disk on reads though. I attached a script that you can use to enter
> | laptopmode (was actually distributed with laptopmode as far as I could
> | tell when googling for the original patch). I call it in responce to
> | ac events from acpid to get it running when the power is disconnected.
> | Will have to make sure that you get those event though since I had to
> | twik my dsdt for that.
> thx for the script, I was searching for but I couldn't find :-(
> On the other hand, what do I search for in my DSDT? I mean, in which way
> can I know if the 'laptop_mode' is supported on my DSDT?

laptop-mode and ACPI are complete different things...
This work like a charm in my iBook for instance.

> 
> | I could try making such a patch for ext3 if you want.
> Yes, please :-)
> 

If you active the laptop-mode, then commit interval for ext3 will change
to the sysctl buffer_age, so if that one is changed to be 600 (like in
the script), then commit intervall will auto-magically be 10 min.

-- 
Ducrot Bruno

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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