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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How do I use the GNOME Panel in Unity?
I really need to use the GNOME Applets, is there a way to do it?
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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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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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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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How do I set the CPU frequency scaling governor for all cores at once?
I'd like to set the CPU frequency scaling governor for all cores at once instead of doing it individually for each core. Is there a way to do this?
(I know it would be easy to echo the governor to /...
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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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`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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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.
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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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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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CPU Frequency Scaling in Unity?
In Ubuntu 10.10, I added the CPU scaling applet on my panel in order to control the CPU frequency scaling. Since Unity no longer has a panel that supports applets, what mechanism do I use in 11.04 to ...
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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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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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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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Ubuntu 20.04.1 LTS Significant Throttling of Intel i7 Processor
I have not been able get to my new laptop (An HP ZBook 15 G2 with Intel Core i7-4810MQ Quad Core Processor 3.7 GHz) to keep from SIGNIFICANTLY throttling my processors on Ubuntu 20.04.
It originally ...
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Intel Core i7-8550U cpu frequency drops on high loads on Ubuntu 20.04
I installed Ubuntu 20.04 and have the following cpu:
grep -E '^model name|^cpu MHz' /proc/cpuinfo
model name : Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
cpu MHz : 3000.025
model name : Intel(R) ...
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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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Can I upper limit the CPU frequency?
How can I upper limit my CPU frequency by a value?
cpufreq offers fixing the frequency to a constant value, instead of letting it vary in a range.
It also offers conservative, on demand, powersave, ...
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What is the current frequency of my processor (CPU-Z equivalent)?
Is there a ubuntu program like CPU-Z which will show me the actual frequency of my processor?
I do a fair amount of scientific computing which leads to me running my programs for up to 10 hrs. To ...
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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 ...
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How to set as default Performance mode on Ubuntu 20.04 instead of Powersave?
I've been trying unsuccessfully to have the CPU governor default to Performance instead of Powersave at startup. Is there a tried-and-true method that currently works for Ubuntu 20.04? I tried the ...
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Disabling AMD's equivalent (on a Zen-1 Epyc) of Intel's "turbo boost" at runtime?
This may be a terminology problem at my end and a duplicate: On Intel CPUs, I can relatively easy disable turbo boost at runtime by running something like
echo 1 > /sys/devices/system/cpu/...
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Processor caps at 800Mhz
When I do something that spikes the CPU, it seems to throttle the CPU to prevent overheating. This is fine. However when I stop, finish or close the program or process that is pushing the CPU, it ...
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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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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 in ...
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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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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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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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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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Determining the clock speed
I mean to determine the clock speed.
I am posting below the output of the various commands listed here.
For the max freq, I see 4 different sources, with 2 different values:
CPU max MHz: 3300,0000 ...
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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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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:
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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 ...
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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 ...
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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 ...
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CPU frequency too high even with 'powersave' governor
Recently I noticed my CPU sits most of the time at high frequencies, even with very little load.
It is an i5-7300HQ processor which should use frequencies between 800 MHz and 2.5 GHz (3.5 GHz with ...
user861975
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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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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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Disable CPU frequency scaling on Lenovo Laptop
I have a bug where my CPU frequency is scaling down every few hours or so. This happens when:
I'm on AC power
scaling governor is on 'Performance'
What do you have to do to disable CPU frequency ...
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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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How do I write a script that runs on startup?
Newbie here. I have a Dell Inspiron 3442 who suffers from the "CPU stuck at 800Mhz" problem. In Windows, I used to run ThrottleStop at every startup and disable BD PROCHOT... So I installed Ubuntu ...
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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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Disable CPU frequency scaling?
I need to run ATLAS on my ubuntu laptop, but the software won't run unless you dissable CPU frequency scaling. I've tried the instructions from here http://math-atlas.sourceforge.net/atlas_install/...
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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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Override BIOS limitation on CPU frequency
Similar to previous questions (example 1, example 2), the BIOS is limiting my CPU frequency because of a bad connection with the center pin of the adapter on my Dell Precision M5520 (which leads to ...
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CPU frquency scaling broken on upgrade from Ubuntu 20.04->20.10 (Intel CPU)
On upgrading from 20.04 - 20.10 I have noticed a massive degrading of performance, my laptop has basically become unusable. After a bit of digging it turned out that all CPUs were constantly scaled to ...
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Laptop slow performance on battery power
I recently installed Ubuntu 19.04 on an HP ProBook 430 G3 and discovered the following issues. The battery won't charge when AC pluged-in until the level drops below 15% or less, sometimes even then I ...
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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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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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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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