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Sadface

Member

From: Germany

Registered: 2009-12-09

Posts: 47

[SOLVED] Intel Atom D410 (Pineview) - CPU Frequency Scaling

Has anyone gotten cpufreq to work on the new pineview chip?
I can load "p4-clockmod", everything else fails for "no device",
but it doesn't scale anything.

Report your successes and how you did it!

EDIT: Oh nevermid, I just commented out the min and max frequencies
und /etc/conf.d/cpufreq.conf, and it works!

Running at 208 MHz now, never seen a processor clock this low!

Last edited by Sadface (2010-02-03 12:57:00)

Skripka

Member

From: 2X1280X1024

Registered: 2009-02-19

Posts: 555

Re: [SOLVED] Intel Atom D410 (Pineview) - CPU Frequency Scaling

delete he edited too fast

Last edited by Skripka (2010-02-02 21:08:23)

Sadface

Member

From: Germany

Registered: 2009-12-09

Posts: 47

Re: [SOLVED] Intel Atom D410 (Pineview) - CPU Frequency Scaling

Okay, now that scaling works, I've got another little problem..
I can only use the performance and powersave governors.
If I run...

cpufreq-set -g ondemand

...or...

cpufreq-set -g conservative

... they will not be used, but the processor will run at full speed

So I either can run it at lowest speed, or highest speed.
Anyone got THAT figured out?

EDIT: Alright, I'll mark this as solved. The Pineview chips do not support
speedstep. They have some other sort of energy saving.

Last edited by Sadface (2010-02-03 12:56:39)

Void_Walker

Member

Registered: 2009-06-17

Posts: 53

Re: [SOLVED] Intel Atom D410 (Pineview) - CPU Frequency Scaling

Pineview chips should support EIST
http://en.wikipedia.org/wiki/List_of_In … 45_nm.29_3 , so it should be possible to change their freq.
I had somehow similar problem. I was using HP Mini 5102 netbook with intel atom N450 and acpi_cpufreq and i couldn't raise the CPU clock speed highter than 1,3GHz any idea why? With p4-clockmod i can change the freq manualy from 208MHz to 1666 MHz.

Anyway, is using p4-clockmod usage safe for intel atom?

Gusar

Member

Registered: 2009-08-25

Posts: 3,606

Re: [SOLVED] Intel Atom D410 (Pineview) - CPU Frequency Scaling

clockmod does not scale the frequency. http://www.codemonkey.org.uk/2009/01/18 … 4clockmod/

My brother's Asus 1001P (Atom N450) scales from 1GHz to 1.66GHz using acpi_cpufreq.