CPU Frequency, or CPU Frequency Scaling. This is implemented in the Linux kernel, and in versions since 3.4 use an ondemand governor by default, which saves power by using as much as is needed.

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`indicator-cpufreq` doesn't seem to work on 14.10

I have a Dell XPS 12 and just installed Ubuntu 14.10 (by completely wiping out the old 14.04 installation). The indicator menu has 2 options, Performance and Powersave, from which I choose ...
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23 views

After upgrading my CPU cpufrequtils does not work

After upgrading my CPU (nothing else changed on my system) I can't change the governor of my CPU. I tried reinstalling cpufrequtils, but got the following error: Setting up cpufrequtils (008-1) ... ...
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3answers
135 views

How can I tell how fast the CPUs are running on a POWER8 server?

I'm running with Ubuntu 14.04 on a Power8 server. Is there a way to tell how fast the processors are running? How do I enable the tools that come with powerpc-utils and cpufreq ? added.... ...
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2answers
108 views

Can I use TLP and CPUFreq at the same time?

I just started using ubuntu 14.04 recently. I read that it's good to have CPUFreq or TLP. I was wondering if it would be okay to have both. Would it cause any problems with the computer performance if ...
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2answers
160 views

Why is my CPU Frequency stuck?

After recent routine upgrades, I've noticed that I'm unable to change my CPU frequency manually. The system is doing it automatically, and choosing the highest frequency possible, which causes it to ...
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1answer
250 views

how do I enable AMD Turbo Core the cpu on my acer aspire 7560?

I have an acer aspire 7560 that on windows supported (through acer proprietary software) boosting the cpu from 1.9ghz to up to 2.5ghz for long periods of time so long as there was adequate cooling. On ...
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2answers
103 views

Turbo core not working

I got ubuntu 14.04 on hp pavalion g6 with an amd apu a6 llano which has a stock frequency of 1500mhz and is capable of boosting to 2400mhz. But on my system it's turbo boost feature is not working.
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32 views

How to allow a process to have full cpu usage?

I just want to speed up the response time of a process by letting it use the full cpu not only %50 of like it's happening in my case. I want to know if there is a command similar to make -j4 to speed ...
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1answer
71 views

Refresh indicator-cpufreq

Is there a way to refresh indicator-cpufreq / cpu frequencies after enabling a pstate on the cpu(without reboot)? Thank you.
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1answer
855 views

ubuntu 14.04 - only performance and powersave governor available (i5 4.gen)

After updating my ubuntu 13.10 to 14.04 there only these to govenors available for my cpu, instead of additionally ondemand and conservative. cat ...
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0answers
140 views

Cannot load acpi_cpufreq module [closed]

I have been trying hard recently to scale my CPU Frequency from 1GHz (the current frequency) to 1.67 GHz (the maximum frequency) but it won't let me as when I execute sudo cpufreq-set -u 1.67GHz it ...
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2answers
1k views

How to enable AMD Turbo Core on Ubuntu 14.04?

I'm using Ubuntu 14.04 (3.13.0-24-generic kernel) on AMD A8-4500m based laptop, and I've recently noticed, that AMD Turbo Core is not working at all. Everything works on Windows, however, on Linux CPU ...
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2answers
3k views

CPU Turbo boost: modify temperature limit under 14.04

I've installed kubuntu 14.04, and there is some problem with CPU turbo frequency. I've read a lot about it, but can't find the correct answer. There is an i7-3630QM CPU @ 2.40GHz with 3.20GHz turbo ...
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1answer
4k views

how to run cpufreqd in ubuntu 14.04?

I've just installed cpufreqd in a fresh installation of Ubuntu 14.04 through: sudo apt-get install cpufreqd After that, I tried to execute it by sudo cpufreqd. But nothing happens (neither error or ...
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2answers
161 views

lscpu output differs when called indirectly?

I use lscpu | grep 'MHz' to get my clock speed. I am getting different results based on the method I am calling this command. Method 1: typing it in the terminal CPU MHz: 1200.000 Method 2: ...
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2answers
766 views

AMD Turbo Core not working - Change CPU driver?

I Got an AMD FX(tm)-8350 Eight-Core Processor with 4GHz frequency and up to 4,2 GHz Turbo Core speed, but I cant get the Turbo Core to work. dmesg | grep powernow should tell me something like: [ ...
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0answers
117 views

modprob acpi-cpufreq problem

I am trying to enable cpu frequency scaling. It seems that I should load acpi-cpufreq for my system. When I run sudo modprob acpi-cpufreq it executes without error. The problem is that I cannot see ...
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0answers
87 views

Making CPU online doesn't work (armv71)?

I am trying to turn CPU status to online, but it doesn't seem to work. I run this: echo 1 | sudo tee /sys/devices/system/cpu/cpu0/online Here is what I get when I run lscpu: Architecture: ...
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1answer
528 views

trouble finding/installing cpu driver for AMD FX 8350

I'm very much new to Linux, but I've hunted for days and can not find any solution to my problem. I'm trying to use cpufreq to control the throttle on my cpu (AMD FX-8350, 64-bit), but I apparently do ...
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1answer
77 views

Why are the CPU frequency timing statistics all zeros?

The cpufreq timing statistics are all zeros: $ sort --unique /sys/devices/system/cpu/cpu*/cpufreq/stats/time_in_state | column 1600000 0 2100000 0 2600000 0 3100000 0 1700000 0 ...
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0answers
85 views

Why doesn't my PolicyKit localauthority file allow me to use cpufreq-set?

I'm trying to configure Xubuntu 13.10 (saucy) in such a way that I can change the CPU governor and maximum frequency (using cpufreq-set) without sudo. I created an ...
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1answer
1k views

How to permanently set CPU power management to the powersave governor?

I'm currently using this: cpupower frequency-set --governor powersave but it resets after each reboot.
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0answers
57 views

indicator-cpufreq only runs as root, is this normal?

I installed indicator-cpufreq from the Ubuntu repository onto my system running 12.04. I can only get it to run if I launch it as sudo. Is this the way it is supposed to work?
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1answer
74 views

safe to use Cpufreq

I have a hp pavilion dv5220us with a dual core T2050 (1.6Ghz , 2M L2 Cache , 533mhz Fsb.). I was womdering if it is safe to use CPU freq. the applet for Ubuntu 12.04.
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1answer
210 views

Can't scale frequencies, always jumps to lowest

The title pretty much explains it. I know this is not a hardware issue. CPU is an Intel Core Duo Output of cpufreq-info: cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors ...
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0answers
101 views

What are the Ubuntu-specific wherewithals against heat?

Note : this is not another question about my laptop overheats under Ubuntu x.y, but more of a reflexion about what makes Ubuntu (in this case, 12.04) handle heat better than other distributions on my ...
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1answer
582 views

undo: sudo update-rc.d -f ondemand remove

As the question says, I issued sudo update-rc.d -f ondemand remove cause that's what an article on configuring TLP says... but after doing the "configurations" my graphics went back to crap. So I ...
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1answer
2k views

Display clock frequency per core using Conky [duplicate]

I am using Conky to display a lot of information of my system. I managed to display the load percentage per core. But I do not know how to display the clock frequency of each core. What I have now is: ...
3
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1answer
706 views

CPU frequency scaling issue - scaling_max_freq wrong

I have the an issue on my Elitebook Core 2 Duo T9600, the scaling stops to work after few seconds of high load and get stuck at 800Mhz. Temperature is around 50-60°C for both cores, bios_limit is ...
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2answers
122 views

Machine stops running randomly

I recently installed Linux MINT 15 64bit as a guest in a UBUNTU 12.04 LTS host. Everything is working just fine, except that the complete machine turns off completely (the host, physical machine) and ...
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2answers
3k views

Maximum CPU frequency stuck at low value

I have observed a problem with Ubuntu 13.04. The problem was not there on 11.10 I used earlier. The maximum CPU frequency is stuck at 2GHzon my Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz (Dell Lattitude ...
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1answer
614 views

is intel turbo-boost option good for life-time?

here is intel-core-i-7 with 2.8 Ghz resp. 3.5 Ghz as turbo-boost option. with this question I refer to this link: Does Intel turbo boost work in Ubuntu? Is option of turbo-boost not harming the ...
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2answers
11k views

Ubuntu 13.04 CPU frequency scaling 'stuck' on lowest frequency

I've just installed Ubuntu 13.04 on my MacBook Air, after toying around for awhile the machine felt really slow, so I checked out the CPU frequency. cpufreq-info, it reports 800MHz on all 4 cores ...
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1answer
555 views

cpu frequency stays at the top even with ondemand or powersave governors

The fan goes lower but the /sys/devices...../cpuinfo_cur_freq and scaling_cur_freq list the highest frequency. core i5 can go down to 1.2Ghz according to cpuinfo but watching the time_in_state shows ...
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1answer
644 views

Minimum and maximum cpu frequency are equal

I just noticed my laptop stared working considerably slower. I am using an updated 13.04, though the issue did not start right after the upgrade. After tracking down the issue I noticed that both ...
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2answers
1k views

Where is the configuration for laptop-mode-tools max CPU frequency?

I use laptop-mode-tools for power management on my laptop and for the life of my I cannot find where to configure the CPU frequency limits. When I'm on battery it sets the maximum limit, regardless ...
4
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1answer
492 views

How do you prevent CPUs from being throttled when battery is taken out of Laptop (aka only on AC power)?

My laptop CPUs are throttled down to .8GHz instead of 2.5GHz whenever I am connected to AC only and not the battery. I tried using cpufreq-set and it allows me to set the speed when the battery is ...
2
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1answer
760 views

Ubuntu 12.10 core different frequencies

There is a little problem with my CPU, I found some tutorials, how to install Avant Windows Manager, I wanted to change my cpu frequency, I thought it works, but it works only for one core. My CPU is ...
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2answers
408 views

Stop CPU from slowing down

When playing a 720p video file, I can hear the laptop CPU fan kick in which after a few minutes causes the video file to play back in a very choppy manner. Is it possible to stop the CPU from slowing ...
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2answers
3k views

Why doesn't indicator-cpufreq show up in panel? [closed]

I'm using 12.04 and I want to add "indicator-cpufreq" to my panel. It's installed and I try to launch it manually through Alt+F2. It just doesn't show up. Does anyone know why?
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1answer
988 views

How add cpu frequency that should be available?

I have a system with an Intel Core i7 970 that should be able to run at 3.2 GHz. I'm running ubuntu 12.04 and installed the cpufreq indicator to be able to change the governor and noticed that I only ...
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0answers
1k views

CPU Frequency Scaling methods *not* working Lubuntu 12.04

I've been trying to get CPU frequency scaling enabled on an old laptop (Celeron 530) running Lubuntu 12.04. I know this works in BIOS because it worked under Vista, and I can just get it working for ...
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2answers
8k views

The performance governor for cpufreq doesn't seem to behave as advertised

The kernel in use: 3.2.0-23-generic on Ubuntu 12.04LTS For example, I issue the following command: sudo cpufreq-set -c 0 -g performance Then I go to /sys/devices/system/cpu/cpu0/cpufreq and type ...
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1answer
193 views

Enabled root password and have System Policy and sudo problem

I enabled the root password a while back. But not three days ago. I'm using Ubuntu 12.04 with latest updates. My laptop is Vostro 3500 For about three day ago, I saw the symptoms. And those are, ...
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2answers
2k views

How can I use CPU-Freq Indicator?

Translated: I have Ubuntu 12.04 and I can not use indicator-cpufreq, Does anybody know of any others? Original Question Me pase a ubuntu 12.04 y ya no puedo usar indicator-cpufreq, conoceis algun ...
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1answer
181 views

How do I solve a thermal issue on my HP dv6 laptop?

I have HP DV6 6080 laptop with Sandy Bridge ci7 CPU and ATI graphic. I have thermal issue and power usage in Ubuntu. I followed the instructions from this tutorial to install hybrid graphic because I ...
0
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1answer
372 views

open_counter returned with error 19

I am trying to use perf tool. I have installed ubuntu 12.04 on Pandaboard. After booting up the system, installed linux-tools. Which installed linux-tools-3.0.0-25. running the perf, gives following ...
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1answer
464 views

Why doesn't my CPU downclock when idling?

i've been fixing the Overheating, thanks for that, it worked, i just reopened my laptop and cleaned it VERY well. but now idle is @ 50*C and not 20-30*C, because of the frequency being at max 2.5GHz. ...
6
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1answer
24k views

How do I get a CPU frequency scaling monitor on 12.04?

I just updated my linux computer from 64-bit ubuntu 10.04 to 64-bit ubuntu 12.04. On that bar along the top of the screen in 10.04 are 8 little icons that display the current speed of each of the 8 ...
4
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1answer
1k views

What are the pros and cons of CPU frequency control on a laptop?

What are the pros and cons of controlling (lowering, or even overclocking) the CPU frequency on a laptop? How can I do it in Ubuntu and will it increase my battery life (as I never play games and ...