HOWTO: CPU Frequency Scaling w/ Kernel Module

[foxy123]

powersave is available just if i put the settings while im using the notebook. If i restart it i wont have powersave and no other options, just ondemand.

Have you put all the required modules in the /etc/modules?

[Rhawi Dantas]

Thats my /etc/modules

lp
sbp2
i8k force=1
fuse
cpufreq_conservative
cpufreq_ondemand
cpufreq_powersave
cpufreq_stats
cpufreq_userspace
acpi-cpufreq

Any ideas ?

[Rhawi Dantas]

bump bump bump

[tim202]

I'm having some trouble getting the instructions on the first page of this thread to work. I've got a Toshiba laptop running a Celeron M processor, running Feisty 7.04 kernel vers. 2.6.20-16-generic. None of the kernel module modprobe commands are able to find anything. If anyone has any experience doing this on a Celeron M i'd really appreciate any input.

Thanks,
TIM

[HangLoose]

I'm also having problems with a Dell.
When I restart the notebook its not with the previous settings anymore. I need to edit again the scaling_max_freq to 10000 so its showing...

Weird thing though, is there anyone who's having the same stuff

[rebelDNS]

I'm also having problems with a Dell.
When I restart the notebook its not with the previous settings anymore. I need to edit again the scaling_max_freq to 10000 so its showing...

Weird thing though, is there anyone who's having the same stuff

I recently reinstalled my laptop and I've been having the same problem. I didn't do anything different than the first time I installed cpufreq but it loses setting every time.

And the ondemand thing freezes up then suddenly skips ahead when I'm working on demanding programs, which is annoying when you work with video.

Has anyone found a workaround?

[rebelDNS]

I recently reinstalled my laptop and I've been having the same problem. I didn't do anything different than the first time I installed cpufreq but it loses setting every time.

And the ondemand thing freezes up then suddenly skips ahead when I'm working on demanding programs, which is annoying when you work with video.

Has anyone found a workaround?

Hey I figured it out!

after seeing this and editing the instructions for the latest version:
http://ubuntuforums.org/showthread.php?t=541794

Do this:
Basically, hit alt + f2 and type in gconf-editor and run

click on "apps" then "gnome-power-management" and then "cpufreq"

right click on the "cpufreq_ac_policy" and "cpufreq_battery_policy" and select "edit key" then change it to whatever governor/setting you want to be default (as in whatever you type in after "cpufreq-set -g TYPE-THIS-PART-IN")

[Linuturk]

I attempted to enable cpufreqd, failed, and tried to revert back to powernowd.

Now, once I try to shutdown, reboot, or anything, my fan kicks on like a jet engine and the machine never turns off.

Help?

[boolat]

Hello,

On my laptop I only 3 frequency setting cpu!

This:



How to add the optional 1200MHZ

Thanks

my laptop acer aspire 9300 model.

[spotslayer]

Scaling was working for me for quite a while. Somewhere it just quit. I think it was around the time I upgraded to 7.10. If you look at the output below everything looks good exept for this.

current policy: frequency should be within 1000 MHz and 1000 MHz

notice it is the same on each of the processors.

How can I set this so it would be between 1000 Mhz and 1660 Mhz.

David

david@DsLNVO:~$ cpufreq-info
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 0 1
hardware limits: 1000 MHz - 1.67 GHz
available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz
available cpufreq governors: userspace, powersave, ondemand, conservative, performance
current policy: frequency should be within 1000 MHz and 1000 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz.
analyzing CPU 1:
driver: acpi-cpufreq
CPUs which need to switch frequency at the same time: 0 1
hardware limits: 1000 MHz - 1.67 GHz
available frequency steps: 1.67 GHz, 1.33 GHz, 1000 MHz
available cpufreq governors: userspace, powersave, ondemand, conservative, performance
current policy: frequency should be within 1000 MHz and 1000 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz.