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Centrino (Dothan) Speed-Step operation under Linux Question

T

The Linuxator

Banned
So I use Fedora Core 4 on my Thinkpad R50e ( specs in sig) I have it steup in the BIOS by which it switches to maximum performance when the AC adapter is plugged, and maximum battery when the AC adapter is not plugged, this works as it should when I had Xp installed, but under Fedora Core 4 it's always scaling down my cpu to 600mhz when it's not under a heavy load, how can I override that and let it use the BIOS preferences ? Or modify the power saving features, so it to keeps the cpu at 1.6 Ghz when the AC adapter is plugged and switch to maximum battery when the AC adapter is not plugged ?
Also when I double click the battery icon it is supposed to suspend the system to ram, but when I do that it gives me an error :

An error occured while launching the Suspend command: Failed to execute child process "/usr/bin/acpi" (No such file or directory)
Please try to correct this error

I have the option to change the suspend command so what should I change it to ?

Edit : I have noticed this IBM utility for GNOME link does anyone know where I can find an RPM version of those packages ?

 
I can't find tpctl through any app installer neither yum nor Apt , anyone know any repo that might have them so I can add it to apt / yum?
 
Well... it realy depends on FC 4's default setup for power management/cpu control. Which I am not sure of.

With 2.4 kernels there were some deamons that people used that tied into the apci stuff... but with 2.6.x kernels those sort of controls are mostly done thru sysfs (/sys directory) and the controls are done in userspace.

For instance I use pbbuttons on my Ibook to control power management, and that works pretty well. I have sleep enabled thru that and all that. Pbbuttons is powerbook buttons and originally was for controlling the extra powerbutton controls on Apple's stuff.. but it stretched to include power management and such.

I beleive that you can use that on non-apple notebooks since everything is handled thru userspace.

There are other similar things aviable to me on debian..

Things that I know of include, cpufreqd, cpudyn, and powernowd. All those do cpu scaling and some take care of apci stuff too. Doing a "ps aux|less" should show you what deamon is doing the controlling and such. Look up that deamon's configuration stuff and see what you can find.

With dynamic cpu on my system it is setup to always run the cpu under the lowest setting and vary it according to need. Of course 99% of the time any desktop computer is either idling or going full blast, so all I usually see is lowest and highest cpu clock settings.

There maybe a very slight lag when the cpu needs to have it's cycles increase... but even when I have it plugged into the wall I like having the cpu frequency controls...

This is because that way it remains as cool as possible and reduces the time that the fan needs to be on. Keeps things much quieter and if I have it on my lap it's much less hot.

See here for people's experiances. Maybe a similar fedore core install can point you in the right directions...
http://www.linux-on-laptops.com/ibm.html
 
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