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Questions tagged [cpufreq]

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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After upgrade to 18.04, cpufreq scales all CPUs in unison rather than individually

I have an Intel i7-6900K, 8 cores/16 hyper threads. I have conky running on my desktop and it shows each of the 8 hardware core clock rates. Prior to the upgrade to 18.04 (from 16.04), each core ...
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Is irqbalance a bad thing?

I am using cpufreq gnome extension and it give's me warning irqbalance detected. Is that something to worry about? And if I somehow stop irqbalance will that affect the processor?
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Disabling c-states on Intel NUC8i7BEH- Ubuntu 14.04

I would like to disable the CPU C-States on an intel NUC8i7beh running Ubuntu 14.04. I have enabled the CPU max_performance in the BIOS, and I have added the following "processor.max_cstate=1 ...
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75 views

CPU frequency at minimum, both on AC and battery. BIOS problem?

My CPU frequency is stuck around the minimum 800 MHz on my Dell Precision 5520. I've exhausted the solutions out there. Background My problem is quite similar to this question, but just that my ...
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CPUFreq: Only 'ondemand' and 'powersave' governors work when laptop's running on battery

So I'd like to be able to use my laptop however I want while it's discharging. Problem is, my Acer Aspire 5 has two AMD GPUs: AMD R7 M440, which is my integrated gpu and RX540, the dedicated gpu. When ...
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63 views

CPU causing low gaming performance

Ok, first, english is not my native language, so I apologize for any poor phrasing. Second, I'm still learning about Linux, Ubuntu 18.04 to be more specific. This is the first time I use this OS and ...
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CPU Frequency Error. Ubuntu on Raspberry Pi

I have Ubuntu 18.04.1 installed on my Raspberry Pi and two USB devices attached: One small bluetooth adapter and one small Wifi adapter. I am connecting to the wifi network with wpa_supplicant like ...
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174 views

Why cpu frequency changing and it is not possible to stop this?

I am trying to disable cpu frequency scaling and limit the processor to a single speed. But something seem to be changing processor speed constantly. Any ideas on why this is happening? I am on 16.04 ...
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How can I lock CPU frequency in Ubuntu 16.04?

It's a Server (Dell PowerEdge R730xd) The CPU is Intel Xeon E5 2630 v4 2.2GHz The OS and kernel is Ubuntu 16.04 and 4.15.0-33-generic The current settings are as follows: intel_pstate is disabled ...
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47 views

My system freezes when it's in powersave

My Dell Inspiron 15 7567 laptop with Intel Core i7-7700HQ and NVIDIA 1050 ti graphic card with the Nvidia 390 driver freezes when I do activities like watch videos in full screen... I did post about ...
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231 views

CPU temperatures 90+ degrees Celsius on 2.5GHz and above

I noticed with the help of psensors that my CPU overheats to 90-97 degrees celcius if it gets above 2.5GHz. I am using a Lenovo Y720 laptop. I tested this both in games and by CPU stress test. I found ...
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Software Request Plasmoid For Kubuntu 18.04 to control CPU Frequency

There are many neer duplicates of this question but I recommend deleting ones that are not version specific (ie 18.04) as we cannot know if a solution will be viable on future versions. This is the ...
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Setting CPU frequency for an i5-430M

I run Xubuntu 18.04 on a Toshiba L505 laptop with an i5-430M CPU. Is there any way I can limit the maximum CPU frequency? This can easily be done in Windows 7 (by limiting CPU to e.g. 70%). Also, ...
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how to reset CPU max speed?

I've recently had a problem where my cpu was running at min speed constantly. This resulted in a very slow laptop and I found an article where one said it could be solved with this command: this is ...
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CPU lock when trying to install 18.04 on MSI with Intel Core i7 7th Gen and NVIDIA Geforce GTX 1050 model PE62 7RD [duplicate]

I have an MSI with Intel Core i7 7th Gen and NVIDIA Geforce GTX 1050 model PE62 7RD I run into CPU soft and hard lock on trying to boot from usb after starting snappy daemon tried nomodeset nouveau....
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How shall I configure cpu frequency upon resuming from suspension of Ubuntu?

Problem: In Ubuntu 16.04, I run my shell script to scale down my cpu frequency to be 1600000, and its governor to be "userspace": sudo /home/t/program_files/hardware/cpu/cpuFreq/changeCpuFreq.sh ...
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287 views

cpufreq gnome extension keeps reverting to powersave

I'm using the cpufreq gnome extension. I manually set it to performance and, within a minute or so, it reverts to powersave. Anyone know what's going on behind the scenes? Output of cat /etc/init.d/...
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cpu frequency report thinkpad t450s

I get simultaneously the following reports: cpufreq in tab: 1.15 GHz (turbo mode) cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq 1441101 lscpu | grep CPU\ MHz CPU MHz: 2594....
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Serious CPU Scaling screw up that I need help solving ( underclocked and cant go back)

I've been searching this everywhere and I couldn't solve it yet so im praying (almost literally) that some1 can fix this. I wanted to underclock my laptop for more Battery life, so I searched and ...
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Turbo boost \ freq

I am trying to define my cpu freq when rendering in Maya for example, and I can't do it. the cpu stays at 2900MHz. When using windows, it use to jump to 4.2\4.5 in some scenarios. I found this thread: ...
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CPU governor not adhering to CPU Min/Max settings

Tried to force CPU to run at max speed after it refused to do so under times when CPU usage definitely should be at max, did so by manually setting governor to 'performance'. This didn't work, CPU ...
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266 views

how to reducing cpu frequency (I have spent over 2 hours trying)

I want to reduce my CPU frequency to less then the original johnul@johnul-HP-15-Notebook-PC:~$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little ...
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How to set “Performance” instead of “Powersave” as default?

When I start my Unity desktop the CPU indicator shows only one bar and it is set to Powersave. When I switch to Performance I have to enter an admin users password. But after system restart my CPU is ...
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824 views

Disable CPU frequency scaling and halts in Lenovo G50-80

I have a Lenovo G50-80 with an i5-5200U CPU running Ubuntu 16.04.2 on 4.4.0-79-generic. I would like to disable CPU frequency scaling and processor halts for running a project. I have installed i7z ...
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157 views

CPU freq always min when plugged in

I have a lenovo g510 with intel i7-4700 inside and after several months something strange has happend. When it runs using battery power everything is ok - cpu freq is scaling. But when it's plugged in ...
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529 views

cpufreq support for AMD 5350 on ubuntu 17.04?

On Debian 8 I was able to set cpu governor on a small computer with a AMD 5350 apu (kabini cpu). now using ubuntu 17.04, kernel 4.10, i get: no or unknown cpufreq driver is active on this CPU Any ...
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CPU frequency issue: What is idma64.0, and what triggers its hyper-activity?

Following up on the old question CPU frequency always at the maximum, I have found that sudo powertop gives a process called idma64.0 with 300 to 4200 events/second when the CPU frequency is stuck ...
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246 views

How do I utilize the full power of the CPU? Why is its full power not used when needed?

The CPU frequency is 2799 MHz even though the maximum frequncy is 3100 MHz. The System Monitor still shows 100% Utilization. How do I force the system to use the full capacity?** Why is the system ...
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285 views

CPU frequency goes to minimum appx. 40 seconds after booting/resuming

I'm on an Acer laptop with an Intel i7-4710HQ, which is nominally clocked at 2.50 GHz/goes to 3.50 GHz with turbo boost. As soon as I can run turbostat after booting or doing a suspend/resume, it ...
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448 views

CPU frequency always at the maximum

I have a new Acer Aspire laptop (bought in February, now running Xubuntu 17.04), and when the power is plugged in, the CPU frequency is always 3.5 GHz, but when it is not plugged in, 2.7 GHz. So it ...
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I cant set the cpu frequency to maximum

i just want to set the maximum frequency of my cpu, it can go from 1.7GHz to 2.4GHz, i used cpufrequtils and tried "performance" and "userspace" but it didn't work. Here's is my cpufreq-info output: ...
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51 views

Show CPU frequency on Unity Panel [duplicate]

Is there any way to always show CPU frequency per core on the Unity Panel? I can get actual CPU frequencies in terminal using sudo watch -n 1 grep MHz /proc/cpuinfo but I would like it to be shown in ...
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264 views

cpufreq-set fails with segmentation fault

I've a Ubuntu 16.04 running on my physical machine. Am trying to set all the cpu scaling governor to "performance". Installed package versions are: # dpkg -l | grep cpufreq ii cpufrequtils ...
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488 views

Ubuntu 16.04 - cpufrequtils scaling cores on demand?

I would like to ask if it is possible to "scale" the number of cores used on a demand base as cpufrequtilsdoes to frequency. From BIOS I can set the number of cores to be used, in my case I use dual ...
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495 views

Automatically change cpu frequency governor

I understand from this question that Ubuntu is now using "Intel P-State", and that as a result, there are only two governor options: performance, and powersave. But is it possible to automatically ...
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789 views

How can I get CPU speed as *.** GHz?

I currently use indicator-sysmonitor to see my CPU and RAM percentage in my system tray. But I would like to add my CPU speed. Now I know there are multiple commands (e.g. lscpu | grep "CPU-frequentie"...
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1answer
642 views

How to set CPU scaling limits System-wide

I am trying to make my cpu to stay in 2.0GHz (To keep the CPU cool XD) or above with a conservative Governor, for that tried to configure minimum frequencies for my CPU using cpufreq-set I need to ...
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1answer
1k views

Make indicator-cpufreq startup with specified governor

I've installed indicator-cpufreq, everything works OK, but I faced the fact that only two governor states are available - Perfomance and Powersave(always set on startup). My attempts to make ...
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342 views

How to use cpufreq

I have watched a video about cufreq but its very outdated so, I want to know how can I use it now to save battery and set to power save or have full performance while charging and thnks in advance.
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996 views

Ho to set minimum and maximum processor state on ubuntu?

I would like to know how to set the minimum and maximum cpu state on ubuntu, like you do on Windows 10 on power settings. Just a way to control the MIPS and prevent CPU overheating when the thermal ...
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560 views

CPU Overclock Frequency not Showing

I've a Q9550 successfully overclocked @ 3,33 GHz which works fine on windows and in ubuntu 16.04 too since several years. The problem is that I've recently installed concky and discovered that my ...
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1answer
412 views

Ubuntu 16.04 Intel i7 4210HQ stuck at 800 MHz

I have a HP laptop with i7-4210HQ (Quad core 2.5 - 3.2) and it started running choppy and slowly all of the sudden. I looked into it and the clock speed is sitting at 800 MHz at all times. I tried ...
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1answer
301 views

Processor frequency gets reduced and doesn't recover

I'm using a Dell Latitude E7440 (Intel(R) Core(TM) i7-4600U CPU @ 2.10GHz) and run an up-to-date Ubuntu 16.04. When I normally run cpufreq-info I get something like analyzing CPU 0: driver: ...
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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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2k 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
507 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
1k 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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1answer
5k 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
614 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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613 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 ...