Arch Linux

GentleGiant

Member

Registered: 2010-01-13

Posts: 23

CPU Frequency scaling help

Hey there, been using arch on my Desktop for quite a while, just installed it on my netbook and I can't seem to get a module loaded up for scaling.

I know I need the Powernow-K8 module, i was using a custom compiled kernel when I had Ubuntu running on it, got it from a person that had the same netbook.

Also 3d acceleration is terrible compared to when I was running ubuntu 9.10.  specs are

AMD Athlon™ 64 single-core processor L110
AMD M690E Chipset
ATI Radeon™ X1270 Graphics

The Netbook gets 3 hours or so on the out of the box install of Vista it came with, only getting an hour or so on Arch and the fan is running constantly.

kourosh

Member

From: England

Registered: 2009-03-10

Posts: 241

Website

Re: CPU Frequency scaling help

modprobe powernow-k8

?

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Website

reed9

Member

Registered: 2008-06-12

Posts: 77

Re: CPU Frequency scaling help

Have you installed cpufrequtils?

Have you read the wiki on cpufrequtils?

Have you read the ATI wiki?

Dheart

Member

From: Sofia, Bulgaria

Registered: 2006-10-26

Posts: 956

Re: CPU Frequency scaling help

cpufreq and
ati

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GentleGiant

Member

Registered: 2010-01-13

Posts: 23

Re: CPU Frequency scaling help

Yeah I installed cpufrequtils, but when I run it, it says I need a module loaded. This is what I get when I try to load up Powernow

FATAL: Error inserting powernow_k8 (/lib/modules/2.6.32-ARCH/kernel/arch/x86/kernel/cpu/cpufreq/powernow-k8.ko): No such device

apollokk

Member

From: Please delete me!

Registered: 2009-03-23

Posts: 157

Website

Re: CPU Frequency scaling help

You tried rebooting?

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GentleGiant

Member

Registered: 2010-01-13

Posts: 23

Re: CPU Frequency scaling help

Yes I have

GentleGiant

Member

Registered: 2010-01-13

Posts: 23

Re: CPU Frequency scaling help

bump

scarecrow

Member

From: Greece

Registered: 2004-11-18

Posts: 715

Re: CPU Frequency scaling help

Do you have acpi and acpid installed?
There's no need to load them via rc.conf if you use hal.

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GentleGiant

Member

Registered: 2010-01-13

Posts: 23

Re: CPU Frequency scaling help

I didn't have acpi installed, just did that

GentleGiant

Member

Registered: 2010-01-13

Posts: 23

Re: CPU Frequency scaling help

k i uninstalled the package acpi, with it installed, the computer couldn't recognize my battery

GentleGiant

Member

Registered: 2010-01-13

Posts: 23

Re: CPU Frequency scaling help

bump

barzam

Member

From: Sweden

Registered: 2009-01-27

Posts: 277

Re: CPU Frequency scaling help

Please don't double post (http://bbs.archlinux.org/viewtopic.php? … 74#p690774) and don't bump. It's completely meaningless. Read the forum guide lines, http://wiki.archlinux.org/index.php/Forum_Etiquette

Also I think the netbook model and brand might be helpful, not just the specs.

GentleGiant

Member

Registered: 2010-01-13

Posts: 23

Re: CPU Frequency scaling help

netbook model is Gateway LT3113h

Soumyadeep

Member

From: kolkata,India

Registered: 2009-09-09

Posts: 218

Re: CPU Frequency scaling help

in my case the problem was solved by activating "cool n quiet" from the bios, donno if the netbook supports it.

Soumyadeep

Member

From: kolkata,India

Registered: 2009-09-09

Posts: 218

Re: CPU Frequency scaling help

if u do get around this problem then use cpupowerd to undervolt ur proccy which will give u increased uptimes.

elric

Member

Registered: 2010-01-14

Posts: 22

Re: CPU Frequency scaling help

Hi, I have a AMD cpu which also needs powernow-k8. If you want more control, you'll need to
modprobe other modules at startup as well. Neither Debian nor Arch load all neccessary modules
automatically. My rc.conf (edited).

MODULES=(powernow-k8 cpufreq_powersave cpufreq_userspace cpufreq_ondemand)

Once this is done, you may "cpufreq-set -g ondemand" to change the governor.

barzam

Member

From: Sweden

Registered: 2009-01-27

Posts: 277

Re: CPU Frequency scaling help

Or edit /etc/conf.d/cpufreq to your liking and start the cpufreq daemon. I find this is easier.

tuxing

Member

From: Berlin/Germany

Registered: 2007-06-27

Posts: 34

Re: CPU Frequency scaling help

I can confirm, that on Athlon 64's the "Cool 'n Quit" option in the BIOS need to be turned on as Soumyadeep (#15) mentioned.
In /etc/rc.conf:
MODULES=(... powernow-k8 cpufreq_your-prefered-governor[s] ...)
DAEMONS=( ... hal cpufreq ...)

that's it

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antonikus

Member

Registered: 2009-11-22

Posts: 42

Re: CPU Frequency scaling help

Sorry you hear you have that laptop.

It has problems with cpu frequency scaling. The DSDT table from the manufacturer doesnt export the correct symbols for cpufreq to work under Linux or Windows 2000.
One solution is to use another fixed dsdt table which adds the support, then cpu freq works. That is what I had to do to make it work. You could follow ArchLinux guides in the wiki how to use another dsdt table but I found it easier to build my own kernel and in that config specity the table.
You also have to use the latest kernel since there was some changes to handle the new L110 processor, I think you need .32 kernel.

However, even then there is a problem in the clock generator of a certian kind (not same in all the laptops), which makes the cpu crash to a halt if changing frequencies too often.

See here for more info http://www.pow.za.net/index.html the newest post there.

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Linux user since redhat 6.1. former gentooer, former slacker. Now arher.