Fedora :: 13 - CPU Not Scaling Frequency?

Jun 16, 2010

I am not entirely convinced that my CPU is actually changing frequency as it is meant to. It sometimes changes frequency, but most of the time it is stuck on 800MHz even when doing cpu intensive tasks. Here is information that may or may not be of help:

cat /proc/cpuinfo
processor: 0
vendor_id: GenuineIntel


I notice here that it says between 800 and 800, but does that mean it is currently at 800, or can only be 800.

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Ubuntu :: CPU Frequency Scaling Not Working

Jan 17, 2010

I have the CPU frequency scaling applet in the panel and it worked fine when I had 8.10 but now that I'm using Karmic, I cant get it to work correctly!

It won't change the speed to what I tell it to. I click on a different speed and it does nothing.

The CPU spins too slowly and videos lag or it spins at full speed and overheats even though I have nothing open! I really need to be able to adjust it.

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Ubuntu :: CPU Frequency Scaling Monitor / Fix It?

Jun 28, 2010

I am new to ubuntu. I have just one question, everytime I reboot my laptop the CPU Frequency Scaling Monitor goes back to "On Demand." Why is that and can I also set it so it stays on Performance.

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Slackware :: Activating Cpu Frequency Scaling ?

May 15, 2011

Slackware64 13.37 multilib, generic kernel (full install)

BIOS: EIST and C3/C6/C7 State support are enabled.

I'm trying to activate cpu frequency scaling following the tutorial on slackwiki: [url]

I can't load any module.


I've tried all of them but the error is the same. I also rebooted to the huge kernel, however, it gave me the same error.

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Ubuntu :: CPU Frequency Scaling Monitor & Hyperthreading?

Sep 2, 2010

I recently installed 10.04 and really like it so far, however I was wondering if it is possible to scale all hypertheading cores at once, currently I am using an applet for each and have to use several clicks to get into the desired powerstate.

I have read that with dual cores you will not have the option to go into different powerstates because it scales all cores at once, however the logical cores that show up with hyperthreading allow each to have a different power state, and will show up as different states if I use cpufreq-info in the terminal, so it seems like it is allowing it.

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Ubuntu :: CPU Frequency Scaling Always Enabled - How To Disable

Nov 19, 2010

When I boot my machine (using a dual core 2ghz CPU) I always find myself out of "performance" mode (which I need), using only 1ghz per core.While this is easily fixable with "sudo cpufreq-set -g performance", I don't seem to be able to do it before having control of the machine. I would like to be able to boot with my CPU at full power.I would prefer to disable whatever is scaling down my CPUs to having to inject cpufreq-set to change governor. Anyone has any hint?I use default Ubuntu but I boot into a KDE4 desktop. But the same issue happens booting into the Gnome desktop.

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Ubuntu :: Taking Control Of CPU Frequency Scaling In 11.04?

Jun 24, 2011

Is there an easy way to take control of CPU frequency scaling in 11.04? There use to be an indicator applet but thats gone

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Slackware :: 13.37 Isn't Loading The Modules - CPU Frequency Scaling ?

Jun 10, 2011

For some reason, it seems that 13.37 isn't loading the modules I need for cpu frequency scaling. I've edited /etc/rc.d/rc.modules so that CPUFREQ is set to on. On 13.1, this would mean the powernow-k8 module would be loaded for my AMD cpu, and the subsequent "ondemand" governor would be loaded. However, for some reason this isn't being done during the boot process. I've tried it using both the generic kernel and the huge kernel (I'd been using huge for a long time before without realizing it.) Has anything changed in 13.37 with regards to CPU frequency scaling?

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Slackware :: CPU Frequency Scaling Will Not Load At Boot

Nov 16, 2010

I'm curious as to why some things are not happening at boot time (i end up having to manually load them).

In /etc/rc.d/rc.modules (near the bottom) i have set "CPUFREQ=on" and commented out any modules not specific to my hardware.

I have left this one uncommented:


And below the "### CPU frequency scaling policies:" i have;


uncommented. My scaling governor is set to:


Now whenever i reboot my machine `lsmod` is not showing any of either powernow-k8 or cpufreq* related modules.

I know i could use /etc/rc.d/rc.local with these:


But seems to defeat the purpose of rc.modules, any idea why they are not being loaded at boot... ?


With slackware64-current

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CentOS 5 Hardware :: Frequency Scaling Disabled Due To Cpu Bug?

Nov 16, 2010

would ask how to fix this warning that comes when i start my centos 5 virtual machine that run under windows 2003 std, previously it run smoothly with linux centos 5.

Centos 5 Virtual Machine
VMware workstation 6 for windows
Windows 2003 STD

Centos 5 Virtual Machine
VMware workstation 6 for linux
Linux Centos 5

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Debian Configuration :: Disable CPU Frequency Scaling In Most Fundamental Way

Jan 18, 2016

I want to turn off frequency scaling permanently and totally in the lowest-level way possible. Is there a kernel command line that can be used or is recompiling the kernel without the governor stuff the only way?

Solved. Just modprobe -r and blacklist the acpi_cpufreq kernel module.

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Ubuntu :: Keep CPU Frequency Scaling On PERFORMANCE Mode Through Reboot?

Jul 30, 2010

Is there any possible way to keep my CPU frequency scaling on PERFORMANCE mode through a reboot? Ubuntu likes to default it back to ONDEMAND all the time.

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Ubuntu :: Set Cpu To Powersave Using CPU Frequency Scaling Applet - Set Permanently?

Oct 13, 2010

Trying to set my cpu to Powersave using the CPU Frequency Scaling applet. When I set it to powersave, it goes back to ondemand on its own. On the earlier versions of Ubuntu, I used to be able to set it from the main menu: system>powermanagement, but with 10.10, I don't get that option. Is there any way that I can set it to powersave permanently? I was also able to set it with Ubuntu Tweak, but it does not have that option either.

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Ubuntu :: CPU Frequency Scaling Monitor Doesn't Work?

Jun 1, 2011

I have recently installed Ubuntu 11.04 on my PC with these configuration:CPU: AMD Athlon 7750 Black EditionRAM: 2GB 1066 MHzVGA: ATI Radeon HD 3200 (on AMD 780G)After I installed Natty Narwhal I felt that my CPU runs at the highest clock all the time (2.7GHz), even if I don't have any program run. I tried all settings for AMD Cool'n'Quiet from mainboard BIOS, but nothing's changed. I installed "CPU Frequency Scaling Monitor" to manually change CPU clock. It recognizes two clock for my CPU, 2.7GHz and 1.35Ghz plus 4 other options; Conservative, Ondemand, Performance and Powersave but the CPU indicator doesn't change on every option!

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Debian Hardware :: CPU Frequency Scaling - On Dual Core Intel ?

Nov 3, 2010

I'm having a weird problem (2.6.32-2-686-bigmem , sid):

Frequency scaling works on CPU 1 but not on CPU 0.

This is regardless of application, the Gnome applet and cpufreq-selector both fail

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Ubuntu :: Asus A50IJ - CPU Frequency Scaling Unsupported - Cpu Temp Is 49 Without Any Reason

Jul 26, 2011

I just bought asusn a50ij and of course I installed ubuntu, now I have few problems: when I try to add CPU frequency scaling monitor to panel it says: CPU frequency scaling unsupported Next problem:my cpu temp is 49 without any reason.and I cant see my graphic card temp,when I go to Harware Drivers I doesnt show any drivers at all,so I dunno whether its nvidia or raedon it doesnt say anything! Also I installed jupiter and each time I turn on my computer it goes to Maximum Performance how can I turn it off?

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Ubuntu :: CPU Frequency Scaling Monitor Won't Stay At 800mhz After Reboot Or A Certain Period Of Time

Oct 26, 2010

The CPU frequency scaling monitor won't stay at 800mhz after reboot or a certain period of time. My goal is to always have my dual core CPU locked at 800mhz to have it run cooler. I'm running Ubuntu 10.10 on my toshiba u300 laptop.

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Debian Multimedia :: Gnome Applet For Switching CPU Frequency Scaling Has 'disappeared' And Not Listed In Add To Panel

Sep 8, 2011

I have a suspicion that this is easily fixed, however a good google (and this forum) hammering having turned up the fix. So I probably have the wrong search criteria, My Gnome Applet for switching CPU Frequency Scaling has 'disappeared' and is not listed in the the Add to Panel.. list of applets.

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Server :: Frequency Scaling Not Working - Out Of 11 Steps Can Change To Only 2 Frequencies And Rest Fail To Work

Apr 23, 2011

I am using Intel Xeon X 3440 processor. The processor has 11 frequency steps to chose from. I have used cpufreq-selector for choosing a frequency and it worked fine. But, all of a sudden it stops working out of the 11 steps i can change to only 2 frequencies and rest fail to work. I am clueless as to why it stopped working suddenly.

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Ubuntu :: Overclocked CPU And Ubuntu Frequency Scaling

Aug 5, 2010

I have a 2.9ghz AMD Athlon II X4, which I have overclocked to 3.65ghz. I know that Ubuntu automatically changes the frequency of the processor to save power, which I like, but it does not show my overclocked frequency. The highest that the frequency scaling will go is the stock clock, at 2.9ghz. Is my processor actually reaching my overclocked speed?

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Fedora :: CPU Scaling Utility Never Drops Below 1.60Ghz - Powersave Does Not Appear

Aug 11, 2009

My laptop is a unibody macbook and has an intel core 2 duo processor. The CPU Scaling Utility never drops below 1.60Ghz. Is this normal? Also. in the ferquency governors, powersave does not appear. Can I install it?

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Fedora :: Can't Adjust CPU Frequency?

Dec 9, 2009

I just update the system, and the cpu frequency applet stop working. I can no longer lock the cpu frequency. Once I click the cpu applet icon, The whole applet just freeze right there. Does not matter if what I do with it. Well, at least I hope some one just offer me a bit help on how to lock the cpu frequency in terminal. Other wise I can not run Folding@home due to cooling issue.

Post added at 05:08 AM CST Previous post was Yesterday at 11:58 PM CST Well, it seems like the program take of authentication is mess up. I have the same problem when I tried to config my firewall. In the Firewall case, once I type in my password, the whole window just went blank. For the cpu applet case, nothing happen, the window ask for password does not show up. nothing. The system log did not have any entry...neither does the crash log. Which there are lot of entry there since I install F12

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Fedora :: CPU Frequency Adjustment Under 15?

Aug 4, 2011

how to lock the CPU frequency under Fedora 15. I try to run cpufreq comand but the terminal tells me the comand is bad and ask me if I want to install the program. When I click yes. It says the program has already been installed. While I try to use software manager under GUI, same thing happend. Software manager clearly tells me I have not install that program. But once I choose to install, the system tells me all package has been install?

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Fedora Hardware :: 13: CPU Stuck At Minimum Frequency?

Jun 9, 2010

My Notebook CPU has variable speeds from 600MHz to 1.6GHz but since I upgraded to F13 it has not budged from 600MHz.I have already installed the gnome CPU speed widget and even if I set it to "performance" or "1.6GHz" it stays resolutely on 600MHz

The only indication that I can see that there is something odd is the output of acpitool tells me the min/max cpu speeds are 600MHz/600MHz. I don't know enough about the guts of Linux to know if acpitool is defective or if it's just repeating what it was told by something lower down.I will post some hopefully useful listings of some commands run under Fedora 13 and then the same commands on the same box with an F12 live USB.


Fedora 13
$ acpitool -c
CPU type : Intel(R) Pentium(R) M processor 1.60GHz


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Fedora X86/64bit :: Powernow-k8 And Incorrect Pstate 0 Frequency

May 1, 2011

If I boot my system with default BIOS settings (no overclocking), the CPU runs at 3.3GHz and powernow-k8 enables a maximum speed of 3.3GHz, as can be seen from the following:


Clearly, for some reason, powernow-k8 is mis-calculating the pstate 0 or maximum speed and this is reflected in the files within /sys/devices/system/cpu/cpu?/cpufreq/ I have tried to update /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq, however despite the file being writeable by root, the change is not maintained. Other than setting the CPU policy to "Performance" rather than "On Demand", is there any way I can force the correct pstate 0 (maximum) CPU speed?

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Hardware :: Acer AL17AL17,fedora 12: Frequency Not Supported

Mar 22, 2011

My desk-pc has an acer AL17AL17. I've tried to install fedora 12 (windows XP works perfectly) and -just starting- it gave me the message: "frequency not supported". I suppose I have to change it, but I don't know what I should do. The installation began, I selected to do a new installation and then, suddenly, the message.
Should I change it in windows? Which frequency do I have to use?

--> On fedora 12: I'm going to install the "Long Term Supported" 6.0 version, as knudfl told me. Anyway, now it doesn't give me that error.

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Fedora Hardware :: Athlon X2 CPU Frequency: Wikipedia Versus Cupinfo

Jan 24, 2010

The Wikipedia says that the frequency of the Athlon 64 X2 3800+ is 2000 MHz.

For that processor, on FC 12 64 bit
cat /proc/cpuinfo
cpu MHz : 1000.000
for each processor.

Is that supposed to "add up" to 2000 MHz for both? My old GA-K8N-Ultra SLI motherboard has its BIOS set for "top performance", so I hesitate increase any clock speed or multiplier.

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Fedora Networking :: Iwconfig And Iwlist - What Frequency A Wireless Interface Is Using

Nov 10, 2010

I have just upgraded my system to Fedora 14. One thing I noticed after running some applications on it is that it is not possible anymore to figure out on what frequency a wireless interface is using. If I set a wireless interface to monitor mode and perform the iwconfig or iwlist command, in the past, I could see the frequency used on the interface, but now, this information is not present anymore. My wireless interfaces are in monitor mode.

Has the frequency information been removed from iwconfig or iwlist commands? If it has, is there another way to report this information?

Here is an output from iwconfig on my system:

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Fedora :: New Kernel - New Audio - Disable Feature - Tweak The Parameters Like Crossover Frequency?

Sep 1, 2010

i have an hp pavilion dv7 and am using f13 64bit. my laptop has a built in woofer underneath that i have never been able to get to work. after the latest kernel update today my laptop now has woofer sound. there must be some new support for my laptops audio card. the problem is that it is a little overbearing. how can i a) disable this feature b) tweak the parameters like crossover frequency or gain? edit: i checked the changelog for 2.6.34 and couldn't find any info on any new audio support features.

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Fedora :: F13 - Tell New "PolicyKitOne" That Should Be Able To Scale CPU Frequency Without Admin Auth?

May 28, 2010

Just installed Fedora 13. How do I tell the new "PolicyKitOne" that I should be able to scale my CPU frequency without admin auth? In F12, there was a tool called polkit-auth, but it no longer exists. In fact, when I type in "polkit" and hit tab, nothing shows in the completion menu. Where's this thing hiding?

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