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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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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1answer
43 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
23 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
18 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: ...
2
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1answer
73 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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0answers
33 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
57 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 ...
1
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1answer
90 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
33 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
47 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
98 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
88 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
294 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 ...
1
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1answer
755 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: ...
2
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1answer
386 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
98 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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0answers
61 views

Cpufreq_indicator does not start

I'm new here and I have a question. Since a short time cpufreq_indicator does not work anymore. I changed nothing. This is my output of cpufreq-info. I hope it can be fixed, because my computer is ...
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0answers
202 views

can not increase cpu frequency

See this indicator behavior, look that https://www.youtube.com/watch?v=ncLGHm9qWF4 my system with eclipse, chrome, java web server opened, my four cores are always at 800 MHz luciano@elric:~$ cat ...
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0answers
162 views

Amd apu e-350 recognized as e-300

My machine is a lenovo thinkpad x121e, i'm running 12.04 precise 64bit. Recently I discovered that my cpu is recognized as amd e-300, the problem is that i'm pretty sure that this laptop only comes ...
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2answers
2k 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 ...
0
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1answer
409 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
8k 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
420 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
533 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
906 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 ...
3
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1answer
353 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 ...
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0answers
399 views

Lubuntu 12.10 cpu frequency not working

I've got a Acer Aspire One with Atom processor N270. The thing that I notice is that the just surfing the web, the netbook chews through the battery, the fan is on a lot and it is very hot. It seems ...
2
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1answer
733 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
363 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 ...
0
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2answers
2k 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?
0
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1answer
863 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 ...
2
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2answers
6k 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
177 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 ...
0
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1answer
173 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
315 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
395 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
votes
1answer
21k 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 ...
3
votes
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 ...
0
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1answer
742 views

cpufreq not available 11.10

on 11.04 I had cpufreq working on my "AMD Turion(tm) 64 X2 Mobile Technology TL-50 stepping 02" processors, however now on oneiric cpufreq won't load. The core temperature of my cpu is normally 40 c, ...
5
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1answer
545 views

Why does Lubuntu automatically reset my CPU into performance mode after a short time?

If I put the CPU mode into powersave or ondemand, it works for some time (5-10 minutes) but after that time Lubuntu automatically sets the CPU to performance mode. (I see it doing sudo cat ...
6
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2answers
12k views

Does Intel turbo boost work in Ubuntu?

I have an Intel i7 processor. It's frequency is 2.67 GHz, however it has turbo boost allowed to a frequency of 3.3 GHz. Is turbo boost posible using Ubuntu?
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1answer
4k views

How-to add cpufreq indicator to system tray [closed]

I installed cpufreq indicator from the ppa:artfwo/ppa repository. The cpufreq started and I see it by system monitor but I can't see him in system tray. What can I do to fix it?
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1answer
4k views

How can i adjust CPU frq. in Lubuntu?

In Gnome 2 there was panel applet that one could use to do that, however in Lubuntu there isn't one, how can i adjust it then?. Preferably with a simple method, don't really want to directly edit any ...
1
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0answers
977 views

Lubuntu doesn't detect correct CPU Frequency [closed]

When I was using Ubuntu setting performance in /sys/devices/system/cpu/cpuX/cpufreq/scaling_governor set CPU frequency at 2.4Ghz and setting powersave the frequency was 800Mhz . But now I'm using ...
1
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2answers
618 views

Maximum CPU frequency on Boot

How can I make the CPUs run at maximum frequency on startup/boot? Is there a script I can make or something?
3
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1answer
2k views

Lenovo Thinkpad W520 cpufreq frequency scaling not working

For some reason my processor always seems to run on full speed even if I don't do anything. Looking through the web, I've found quite some suggestions. According to ...
0
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1answer
255 views

Why does sysinfo list my CPU as having 1,6GHz when I have an i5-2300 CPU @ 2.80GHz?

I would like to know whether there could be a driver I'm missing, since sysinfo can't see the correct value for my CPU frequency
2
votes
1answer
2k views

CPU Scaling in Unity with indicator-cpufreq

Original question by some guy: CPU Frequency Scaling in Unity? Followup: I installed the indicator-cpufreq app and ran it, but nothing appears in my indicator are. I can see that the app is running ...