Comments on Techno Wizah: Debian HOW-TO : CPU power management

Should I leave my CPU (Core Duo) at full power or ...

2011-02-17T10:41:01.280-05:00

Should I leave my CPU (Core Duo) at full power or should I keep it in adaptive mode? Any Negative effects?

To problem ; /etc/sysfs.conf or /etc/default/cpufr...

2010-04-09T19:34:42.117-04:00

To problem ;
/etc/sysfs.conf
or
/etc/default/cpufrequtils

my lenny;
uname -a
Linux XXX 2.6.26-2-486 #1 Tue Mar 9 17:10:34 UTC 2010 i686 GNU/Linux

cat /etc/init.d/cpufrequtils
or
cat /etc/init.d/cpufrequtils | grep GOVERNOR

See GOVERNOR="ondemand" or whatelse..
Change it to what you want.

/etc/init.d/

Hello, excellent, simply excellent : Simple, eff...

2009-11-22T15:24:07.152-05:00

Hello,

excellent, simply excellent : Simple, efficient, worked like a charm from the first try on my k8, thank you very much !

2009-11-11T14:48:19.158-05:00

This comment has been removed by the author.

I tried it with a Phenom II 940 using powernow_k8 ...

2009-08-10T16:29:08.382-04:00

I tried it with a Phenom II 940 using powernow_k8 and it worked.

I have tried various tutorials to get this working...

2009-03-15T15:54:00.000-04:00

I have tried various tutorials to get this working in ubuntu with my pentium D, and was told my cpu doesnt support cpufreq, thanks poster I can really shut those idiots up now and brag how everything i can do in windows (RMclock)I can do in linux

Great post; thanks a lot! I'd been told that deskt...

2009-03-09T21:11:00.000-04:00

Great post; thanks a lot! I'd been told that desktop P4s didn't support scaling, so I was resigned to fan noise (and dirty looks) till I tried this!

On my Lenny install I had to apt-get cpufrequtils to get the cpufreq-info command; it also adds some /etc/rc.d scripts, which might be why the previous poster didn't have luck with /etc/defaults/cpufrequtils?

Worked fine on my desktop amd64.Enjoying the peace...

2009-02-23T04:28:00.000-05:00

Worked fine on my desktop amd64.Enjoying the peace.Before the cpu used to make lots of noise and produce lots and lots of heat.After having seen the power of cool-n-quiet in windows i wanted it in linux.Now i finally have it,all thanks to u.......................

Your trick doesn't work on my Debian 5.0...

2009-02-20T22:52:00.000-05:00

Your trick doesn't work on my Debian 5.0...

great help , thanks :-)

btw,
/etc/defaul...

2009-01-06T07:27:00.000-05:00

great help , thanks :-)

btw,
/etc/default/cpufrequtils was not initially on my (newly installed) debian sid 64bit system.
so i created it and place a one line command to enable the governor i wanted to use.

GOVERNOR="performance"

I'd like to have this feature on my desktop. Runni...

2008-12-22T21:45:00.000-05:00

I'd like to have this feature on my desktop. Running ubuntu 8.04. So far:

gerard@desktop:~$ cpufreq-info

analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
analyzing CPU 1:
no or unknown cpufreq driver is active on this CPU
gerard@desktop:~$ cat /proc/cpuinfo | grep "model name"
model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4000+<

thanks a lot!
Works perfect with my AMD Athlon ...

2008-12-07T14:49:00.000-05:00

thanks a lot!
Works perfect with my AMD Athlon X2 4850e

Easy to follow and worked for both: amd64 x2 and m...

2008-05-29T05:10:00.000-04:00

Easy to follow and worked for both: amd64 x2 and my PIII laptop :D

Thank You!

tried it on an Athlon 64/4200 x2 - Biostar GeForce...

2008-02-27T03:10:00.000-05:00

tried it on an Athlon 64/4200 x2 - Biostar GeForce 6100 motherboard.

Looked great with the CPU running in low power mode and running up to full power when needed.

Right up until it crashed, turning the video into a blank with short lines across it and locking up the keyboard so hard that even SysRq S - U - B wouldn't reboot the system, I had to unplug it and power it back up to

THANKS A LOT !!!!!!!!!!!!!!!!!!!!!!!!

2008-02-07T17:16:00.000-05:00

THANKS A LOT !!!!!!!!!!!!!!!!!!!!!!!!

Thanks a lot for this one ... works like a charm o...

2007-11-29T13:23:00.000-05:00

Thanks a lot for this one ... works like a charm on my AMD Athlon(tm) X2 Dual Core Processor BE-2400 :)

I had been unable to get power saving working prop...

2007-10-07T15:44:00.000-04:00

I had been unable to get power saving working properly on my Toshiba lappy for two years. This tutorial did it. Thank you!

Hello,

Did you try the acpi_cpufreq ...

2007-10-02T21:52:00.000-04:00

Hello,

Did you try the acpi_cpufreq module?

Thanks for reading,

Hugues

i'm having the same problem as the anonymous with ...

2007-09-25T22:58:00.000-04:00

i'm having the same problem as the anonymous with the 420

I have a celeron 520, and get FATAL: Error inserting p4_clockmod (/lib/modules/2.6.20-16-generic/kernel/arch/i386/kernel/cpu/cpufreq/p4-clockmod.ko): No such device

i guess the newer celerons don't support scaling?

Hello Orbin,

There are many ways to specify...

2007-09-13T07:13:00.000-04:00

Hello Orbin,

There are many ways to specify the desired governor to use.

Besides using /etc/sysfs.conf, the other possibility is to use /etc/default/cpufrequtils (once you have installed the package cpufrequtils).

Good luck,

Hugues

Thanks for your guide.

I can't seem to get ...

2007-09-02T08:19:00.000-04:00

Thanks for your guide.

I can't seem to get the desired governor to stick at boot however. I have added the required ... = conservative line to /etc/sysfs.conf but it still gets set to ondemand each startup.

Kernel is 2.6.21-2-k7. CPU is an AMD Sempron 2800+.

Appreciate any advice.

Hi Rafael,

Thanks a lot for your support.
2007-08-07T10:48:00.000-04:00
Hi Rafael,

Thanks a lot for your support.

Hugues

Very very thanks! It is just what I've been search...

2007-08-07T05:22:00.000-04:00

Very very thanks! It is just what I've been searching for for about two weeks and almost I was preparing for compiling a customized kernel thinking that this feature was not prebuild on the stock kernel!

I followed all the steps and now my new Athlon64 dual core runs just cool.

I want to comment also that the Ubuntu 7.04 both 64 and 32 bit already come with the Powernow!

could i be that stupid?
.....

i guess i ...

2007-07-06T08:58:00.000-04:00

could i be that stupid?
.....

i guess i could :).
Ill try that later on, thanks for the reply :D

Anonymous,

My guess is that you are using t...

2007-07-06T07:04:00.000-04:00

Anonymous,

My guess is that you are using the wrong kernel, as the 2.6.18-3-k7 one you are mentioning is tailored for AMD K7 CPUs. So obviously it won't allow you to load modules specific to Intel processors.

You can verify the exact kernel you are using with this command:

uname -a

I suggest you install a more appropriate kernel for your

Comments on Techno Wizah: Debian HOW-TO : CPU power management

Should I leave my CPU (Core Duo) at full power or ...

To problem ; /etc/sysfs.conf or /etc/default/cpufr...

Hello, excellent, simply excellent : Simple, eff...

I tried it with a Phenom II 940 using powernow_k8 ...

I have tried various tutorials to get this working...

Great post; thanks a lot! I'd been told that deskt...

Worked fine on my desktop amd64.Enjoying the peace...

Your trick doesn't work on my Debian 5.0...

great help , thanks :-)btw,/etc/defaul...

I'd like to have this feature on my desktop. Runni...

thanks a lot!Works perfect with my AMD Athlon ...

Easy to follow and worked for both: amd64 x2 and m...

tried it on an Athlon 64/4200 x2 - Biostar GeForce...

THANKS A LOT !!!!!!!!!!!!!!!!!!!!!!!!

Thanks a lot for this one ... works like a charm o...

I had been unable to get power saving working prop...

Hello,Did you try the acpi_cpufreq ...

i'm having the same problem as the anonymous with ...

Hello Orbin,There are many ways to specify...

Thanks for your guide.I can't seem to get ...

Hi Rafael,Thanks a lot for your support. 2007-08-07T10:48:00.000-04:00 Hi Rafael,Thanks a lot for your support.Hugues

Very very thanks! It is just what I've been search...

could i be that stupid?.....i guess i ...

Anonymous,My guess is that you are using t...

great help , thanks :-)

btw,
/etc/defaul...

thanks a lot!
Works perfect with my AMD Athlon ...

Hello,

Did you try the acpi_cpufreq ...

Hello Orbin,

There are many ways to specify...

Thanks for your guide.

I can't seem to get ...

Hi Rafael,

Thanks a lot for your support.
2007-08-07T10:48:00.000-04:00
Hi Rafael,

Thanks a lot for your support.

Hugues

could i be that stupid?
.....

i guess i ...

Anonymous,

My guess is that you are using t...