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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Fans aren't fullspeed while CPU is 100°, then CPU frequency decrease

Since I upgraded to from 12.04 to 16.04, my Dell XPS 13 (dev edition/Sputnik) laptop seems very slow (and less noisy) to me. Before upgrrading, under heavy load, I was able to hear the fans going full-...
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1answer
31 views

CPU scaling: how can current frequency be out of min-max range?

I'm trying to understand why my CPUs don't run at higher frequencies (related link) Can someone explain me how is it possible that when a min and a max are defined, the effective value finally goes ...
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2answers
36 views

Wrong Minimum frequency Core i7 CPU

The problem with my Linux machine is, the frequency reported by the files cpuinfo_min_freq and scaling_min_freq show 1200000 but in Windows it can be slowed down to 900000. This causes my Laptop to ...
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1answer
67 views

Slow CPU after resume

Sometimes after putting my laptop to sleep it's CPU is locked to the slowest frequency - about 600-700MHz. My laptop is Dell E6420 with i5-2520m. Kernel version: 4.6.0-040600-generic. I first came ...
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0answers
105 views

TLP not working on 16.04

I installed TLP on my laptop and set it up so that it should switch to powersave when on battery but it's not working. when I run tlp-stat -p this is the output when on AC: --- TLP 0.8 -------------...
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1answer
173 views

CPU frequency scaling stuck 2.80 Ghz and it's not going down

I'm using Ubuntu 16.04 LTS with gnome desktop. I set the governor to "ondemand", but the CPU still runs at top frequency. I tried many things, but it's stuck at 2.80 Ghz for hours. "scaling_max_freq" ...
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1answer
145 views

Very busy and overheated CPU while playing flash games

I have a very strange problem - when I play any basic browser flash game, CPU goes literally mad, it becomes very busy and overheated. I tried different browsers - did not help I tried playing ...
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0answers
23 views

Eclipse and Spring Tool Suit (STS) hangs all the time in ubuntu mate

I find this problem with many of the linux and eclipse users who are facing this problem. When I use any other application like chrome, vlc or gimp, ubuntu mate 15.10 works fine. But when I run ...
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1answer
33 views

Frequency scaling on AppliedMicro's Mustang

I'm trying scale the frequency on AppliedMicro's Mustang board. I'm using Ubuntu 14.04 (aarch64) and I've installed the 'cpufrequtils' package but it seems that the kernel driver for the X-gene ...
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1answer
51 views

Re-enabling Ondemand cpu frequency scaling

I ran sudo update-rc.d ondemand disable to disable on-demand cpu frequency scaling. Can it be re-enabled again running sudo update-rc.d ondemand enable os: ubuntu 14.04 lts.
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27 views

indicator-cpufreq frequency lost after suspension/hibernation

As the title, I'm using indicator-cpufreq to set the frequency of the CPU. It's really useful when you are on battery and you want to save some power. However, when I wake the laptop after a ...
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1answer
72 views

How to change the CPU escalator configuration that Ubuntu has originally

I don't want a command line solution that includes installing anything at all. Ubuntu configures the CPU governor in a configuration file AFAIK. I want to locate and change the file correctly. I don'...
6
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1answer
323 views

CPU clock slower after each resume from sleep

I'm running kubuntu 15.10 on a Lenovo Y50-70, and I have a very annoying problem with the CPU clock: Whenever the computer resumes from sleep, the CPU clock has a lower maximum, and this does not ...
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0answers
196 views

Strange cpufreq scaling issues: regardless of governor, max cpufreq drops incrementally on wake

I am running Ubuntu Mate 15.10 64bit (kernel 4.2.0) on a Lenovo y5070 with an i7-4710HQ cpu. I noticed recently (possibly after a recent dist-upgrade) that certain programs were really slow. After a ...
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1answer
148 views

Monitoring custom graph in CONKY

How to monitor a custom graph in CONKY. Right now I display the single values of the CPU frequency in GHz: CPU1: ${exec echo "scale=1; $((`cpufreq-info -c 0 -f`)) / 1000 / 1000" | bc | awk '{printf "%...
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1answer
155 views

Laptop battery life

I have Asus TransformerBook TP500LB. Very good laptop - i5 5200U, 8GB RAM, nV 940M, ... But, when I run windows10, my battery life is somewhere about 6-7hours (very low brightness and no gaming as ...
2
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2answers
122 views

Low CPU frequency

I'm having the following problem with Kubuntu 15.10. Sometimes when I put my laptop(Dell e6420) to sleep and later wake it up, I see that CPU is running at really low frequency (~600Mhz) This is ...
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1answer
107 views

Dell Inspiron 5423 CPU low-power state Non-Dell Power Adapter

So I've been trying for hours now to get the CPU out of the low power state. The Processor is a Dual-Core with HT @1.8ghz however because im not using a Dell Adapter its missing the protocol chip that ...
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1answer
214 views

unable to set cpu scaling frequency

I have Ubuntu 15.04 on a clevo w605sj (Eurocom Electra 2), which gets very loud when the fan is on. Sometimes this is unacceptable, and so I'd actually rather throttle the CPU and take the ...
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0answers
131 views

Ubuntu Touch - can't keep cpu frequency set

I can't seem to set the cpu frequency. I've tried a number of utilities (e.g. cpufreqd / cpufrequtils), as well as just manually editing the cpu frequency using commands like: echo performance | sudo ...
0
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1answer
172 views

Frequency scaling

I'm trying to get the frequency of my CPU on max I can't seem to change anything via cpupower or cpufreq-utils, or even by modifying the files myself at /sys/devices/system/cpu/intel_pstate So I ...
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1answer
562 views

How to scale intel_pstate driver on Ubuntu 15.04?

I nearly tried all the solution to scale the cpu frequency but no success. I have Intel Core i5-3210m 2.5Ghz-3.1Ghz. I want to permanently set it to 1.6Ghz with no turbo boost to improve battery ...
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0answers
103 views

CPUpower sets the frequency by itself

Whenever I try to change the governor or CPU frequency with CPUpower, after 10-20 seconds it starts to go up again.Lets say I set the maximum CPU frequency to 1.5GHz it will go to 1.76GHz and then to ...
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1answer
356 views

Why does Lubuntu 14.04 Kernel Panic on boot when Notebook is connected to AC Power, but not when on battery

since Ubuntu kernel 3.13.0-59 (or possibly even -58) Lubuntu kernel panics on Acer Travelmate B115-M when the device is connected to AC, but not when it's starts with battery only. Older kernels ...
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2answers
249 views

How do I diagnose a sudden slowdown

Running a particularly compute-intensive task on my computer (Tecra W50) for more than a few seconds causes it to become very slow. Performance does not return to normal after the task completes. ...
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1answer
799 views

CPU running at 60°C on Yoga 13 – How to control fan speed?

I am running Ubuntu Gnome 15.04 on a Lenovo Yoga 13 laptop. My fan is constantly running. If have tried to solve the problem with TLP , but to no avail. I have also installed cpufrequtils. On ...
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1answer
324 views

My CPU clock speed is changing constantly. Is it normal?

I am running Ubuntu 14.04 on my laptop, and whenever I run cat /proc/cpuinfo | grep "MHz" I get varying speeds. I thought that clockspeed is a fixed property, which can be under clocked or ...
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2answers
1k views

How can I set the CPU frequency to always stay at its maximum?

Since I mostly use my laptop as a desktop, I'm trying to set its CPU to its maximum frequency. The CPU is an Intel Core i5-3337U (dual-core with Hyper-Threading), which caps at 2.5GHz (with 2 active ...
0
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1answer
259 views

Slow down CPU using indicator-cpufreq

I'm trying to slow down my CPU to play an old game (Windows 98). I've installed indicator-cpufreqand after using this help I managed to get it to work. However, I'm only able to select certain ...
0
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1answer
63 views

Problem with CPUPower

I have set my CPU frequency to min and max, but when my laptop is plugged to the adapter it changes it automatically the min and max frequency to the maximum CPU frequency (2.2Ghz). When it is ...
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1answer
209 views

CPU frequency limit to 2000 on battery

I want set frequency to 2100 in battery mode but it have limit to 2000. I ran tlp ac and change CPU frequency with indicator-cpufreq to 2100 (and also check Performance) then check frequency with ...
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343 views

Ubuntu 14.10 cpufreq not working (not pstate problem)

About a 4-year old HP Laptop with a 2.8GHz i7, 8GB RAM. Has been upgraded individually from 11.04 through to 14.10, skipping 13.10. Since 13.04, after booting, cpufreq-info reports: current policy: ...
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3answers
4k views

CPU frequency control

I have a kubuntu 14.04 with the latest HWE kernel (3.16.0-31-generic), and a Xeon 1246v3 processor (which is basically an i7 4770 with ecc support). The processor has base frequency of 3.5 ghz, and ...
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2answers
4k views

Ubuntu is very slow when Intel SpeedStep is enabled (CPU is not used in full speed)

I have a Dell notebook with i7 processor and Ubuntu 14.10. When i disable SpeedStep in my BIOS my computer is very fast but the fan runs very often and the battery gets empty fast. When I activate ...
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1answer
831 views

Can I upper limit cpu frequency?

How can I upper limit my cpu frequency by a value? cpufreq offers fixing freq to a constant value, instead of letting it varying in a range. It also offers conservative, on demand, powersave, and ...
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2answers
811 views

High CPU Frequency at Idle

I've recently installed indicator-multiload on my laptop running Ubuntu 14.10 and noticed my CPU sits most of the time at high frequencies, even with very little load. It is an i7-4700MQ processor ...
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2answers
520 views

cpufreq-stats missing

I'm on kernel 3.16.0-29-lowlatency on cpu family : 6 model : 55 model name : Intel(R) Pentium(R) CPU N3540 @ 2.16GHz Unfortunately as the entire /sys/devices/system/cpu/cpu0/cpufreq/...
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1answer
2k views

TLP don't change CPU frequency

I check CPU clock speed with cat /proc/cpuinfo | grep "MHz", After sudo tlp start and sudo tlp bat still frequency is 2100MHz (Maximum). Could you please help me to solve this problem? I'm using ...
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1answer
707 views

Reduce CPU frequency in battery mode automatically

Is there any way to do that? Something like xbacklight and Cuttlefish
0
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1answer
739 views

indicator-cpufreq not working with kernel 3.17?

indicator-cpufreq have just two option (powersave and performance) after upgrade to kernel 3.17. Is there any way to fix it? I reinstall this program but still have same problem.
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1answer
609 views

indicator-cpufreq always shows only one bar on Ubuntu 14.10

On Ubuntu 14.10 the indicator-cpufreq always shows only one bar. I can switch between Performance and Powersave but the indicator icon never changes. It always shows only the one most bottom bar. I ...
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2answers
1k views

Overclocking with Ubuntu

I overclocked my CPU in BIOS using a multiplier. Everything in Ubuntu still shows the CPU frequency is stock. Is the CPU running at stock frequency, or is it overclocked like it's supposed to be? Is ...
13
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2answers
16k views

Why are missing the frequency options on cpufreq-utils indicator?

I just upgraded to utopic and the indicator for cpufreq-utils just show two cpu frequency options: Power save and Performance. Before in trusty: Now in utopic: Regards.
4
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2answers
3k views

How to set governors for Intel to work as old good ondemand?

I used to work on my laptop on ondemand governor, which was switching CPU frequency depending on CPU usage. It worked quite nice for years and had three very important advantages: low hardware ...
7
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1answer
6k views

`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 ...
2
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0answers
227 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) ... ...
12
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2answers
7k views

Ubuntu and processor speed detection

I've got an older laptop that I use as a media center on my TV and I'm usually installing/reinstalling/uninstalling different OS' and Apps to get it to run as smoothly as possible. One thing I ...
2
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4answers
615 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
1k 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
2k 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 ...