Questions tagged [cpufreq]

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Lenovo laptop CPU is erratically underclocked [duplicate]

My laptop is Lenovo legion 16 pro: CPU: AMD Ryzen 7 5800h with Radeon graphics RAM: 16GB 3200MHz Storage: 1TB SSD GPU: NVIDIA Geforce RTX 3060 6GB Operating System: Windows 11 My problem is that the ...
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How to activate SpeedStep from linux?

Is there any possibility to control Intel SpeedStep feature from Linux? I'm looking for a service or command that should kicks in when a processor hungry process runs and it should limit the CPU ...
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3 votes
0 answers
294 views

Disabling both intel_pstate and acpi-cpufreq in favour of speedstep-lib

My Haswell CPU uses, by default, intel_pstate to do the frequency scaling. I have been able to disable that in /etc/defaults/grub so that it drops down to acpi-cpufreq driver. However, I want to ...
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2 answers
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Change permanently boost.txt

Whenever I change the sys/devices/system/cpu/cpufreq/boost.txt file, when I restart the computer, it goes back to its original state. How i permanently change this value to 0 ? I added a one shot ...
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How to read the CPU Frequency / CPU Voltage table?

I need to mearsure the core's energy consumption in a short period with a fixed frequecy (not overclocked). I think PCU(Package Control Unit)stores a static table which defines the relationship ...
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ThrottleStop dosen't save SpeedShift SST Limits

ThrottleStop dosen't save SpeedShift SST Limits in profile 1,2,3,4. I have to select a profile and everytime have to adjust speedshift limits manually opening TS. Is there a workarround for this ? ...
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/sys/...cpufreq says 1GHz but CPU applet says 1.66GHz

My old Thinkpad X60 has a tendency to overheat when under load. I recently tried cd /sys/devices/system/cpu/cpu0/cpufreq echo powersave >scaling_governor while sleep 1; do cat cpuinfo_cur_freq; ...
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2 votes
1 answer
394 views

No throttling of any kind but processor freq sticks at 0.8 Ghz and Power ~ 8W

I have Dell XPS 9650, i7-7700Hq, GTX 1050, 512GB SSD, 16GB DD4, 4K. I find no throttling as in Thermal, Power limit, Current limit, MB VR (from Intel XTU), No Limit reasons from ThrottleStop, No "Yes"...
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1 vote
2 answers
318 views

How to determine processor frequency scale down to ~200 MHz due to ThermStatus

I am attempting to determine what is causing an embedded industrial computer (ARK-1550-S9A1E) with Intel 4th Gen Core i5-4300U Dual Core to scale down all the cores to around ~200 MHz from 1.90 GHz ...
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3 answers
2k views

Pros & Cons of throttling CPU [closed]

So my laptop's CPU has this turbo boost thing, and it heats up the machine to an uncomfortable degree. So I've used cpufrequtils to keep my CPU at only 1.4GHz, and it hasn't felt any slower and it's ...
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1 answer
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Reported CPU frequency is lower than what the hardware specs are

My Linux computer with custom kernel configuration seems slow. Even make menuconfig of Linux kernel is as slow as I can see redrawing of the menu. When I run cpupower frequency-info, frequency is ...
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2 votes
1 answer
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Intel Core i7-8550U, Turbo Boost not working?

I have new HP Elitebook 850 G5 laptop with Intel Core i7-8550U which has TurboBoost up to 4.00GHz and base frequency 1.80GHz. However when i put the CPU under stress test firstly the frequency jump ...
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Why all of my CPUs scale to the max freqency when only one of them is runing at 100% and all the others at around 0%?

I am running Ubuntu 18 on a System76 Oryx Pro 4 with an i7 8th gen 6 cores. Here is the output of lscpu for your reference: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order:...
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HP Envy Mhz almost always stays at minimum (400HZ) even under heavy load

After using Linux Mint 18.3 for about half a year without issues, I installed Linux Mint 19 in my OS yesterday. But it seamed a lot more laggy and unresponsive running of the USB Stick. I didn't think ...
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0 answers
628 views

How to reduce the frequency of CPU?

I want to reduce the frequency of the CPU because it is always at full frequency also when I do nothing and I stay only on the desktop. On the CPU appear core speed 4200GHz, the frequency is set on ...
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cpufrequtils shows my CPU can perform at a higher frequency... why can't I hit max freq?

I am using a quad-core H2+ Allwinner CPU on my OrangePi Zero. It is 1.2GHz, and I am running Debian server. I've installed cpufrequtils, and am able to modify the governor, which is currently set to ...
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4 votes
0 answers
588 views

Since upgrade from linux 4.6 to (4.7, 4.8), %CPU is always 0; the frequency is unknown

Since the upgrade to linux kernel 4.7 (Debian Stretch), it seems that my system (Aurora-R4 i7 3820) is a bit slower (short hangs sometimes) and the most strange thing is that I can't see anymore the ...
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1 vote
0 answers
2k views

1600 MHz RAM, detected as 1333, XMP doesn't work

I have an Asus M51AC-FR034S PC which has a M51AC motherboard that is in fact a rebranded H87M-PRO. I have 2 RAM sticks (I don't know the exact word for that) A-Data MI64C1D1629Z1 8GB 1600 MHz Slot ...
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2 votes
1 answer
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How to disable frequency scaling? Intel_pstate

Heyo, I'm trying to disable the frequency scaling of one of my CPU and set the frequency to the maximum I tried using cpupower -c 1 frequency-set -g governor and -d 2600000 or with cpufreq-set but ...
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2 votes
0 answers
364 views

CPU Time and Clocks

I've been given this question: Assume that on some computer the overhead of trapping to the kernel for clock ticks is about 2 microsecond, with the handler requiring another 9 microseconds. Clock ...
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1 vote
1 answer
414 views

Add android-like governors to any Linux on PC

I was looking for a better way to get the most of a laptop on Ubuntu or any Linux distro. In Android rooted phones, we can add CPU governors to the kernel in order to have "smart governors" taking ...
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1 vote
1 answer
717 views

CPU heating too much, cpufrequtils to limit its speed works weird

I am using an Intel i5 powered laptop and my OS is a 64 bit Linux Mint 14, kernel version 3.5.0-43. Up until now the CPU usage policy was ondemand and it usually was working at 2.40Ghz. In this setup ...
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2 answers
139 views

CPU fan extremely fast even with 0% CPU

I just reinstalled my operating system (Crunchbang on Debian testing), and all of a sudden the fan is running as fast as it can even with 0% CPU. The air coming out of it is cold. The only CPU ...
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1 answer
144 views

What does the CPU *really* do during memory instructions?

I was recently testing out the linux cpufreq module and noticed that regardless of whether I was running a CPU intensive benchmark or a memory intensive benchmark, the cpufreq module always chose the ...
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2 votes
2 answers
5k views

CPU Maximum Frequency stuck at 59%

I have just installed a Windows 7 32-bit on my HP Compaq nx6310 notebook. However, once I boot into Normal Mode, I receive 2 Kernel-Processor-Power Event ID 37 warnings in my event log indicating that ...
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2 votes
2 answers
4k views

cpufreq performance module?

I see no cpufreq performance module: $ ll /lib/modules/2.6.32-358.2.1.el6.x86_64/kernel/drivers/cpufreq/ total 88<br/> -rwxr--r--. 1 root root 20576 Mar 12 18:26 cpufreq_conservative.ko -rwxr--...
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0 answers
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Pstate (underclock) on single core hyperthreaded cpu

In Ubuntu, I can underclock the CPU using the CPU freq applet. My netbook is a Intel atom n270, basically single core with 2 "virtual cores" due to hyperthreading. I can underclock one of these ...
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2 votes
0 answers
562 views

Dynamic/Static CPU Frequency Scaling

I need to manipulate frequency of each core in my Intel i7 processor. There is a way to do it in Debian with the Linux kernel cpufreq subsystem. It is described in their wiki. However, I want to do ...
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2 votes
2 answers
1k views

Underclocking/Power saver mode in Ubuntu 9.10

I'm using a laptop (Intel Pentium Dual T3400, 2GB RAM, Intel GL40 chipset), dual-booting with Windows Vista Home Premium and Ubuntu 9.10. Majority of the time, Windows is used. However, when I have to ...
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0 votes
1 answer
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Does a MBP with is a lower base frequency CPU - but same generation - draw less power?

When purchasing a new MBP I want to optimize it for mobile usage. There are different quad-core i7 processor available for the 15'' MBP. See the list here. While they have different features, all of ...
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0 votes
2 answers
983 views

Ubuntu Virtual machine Windows 98 SE Spikes quad core CPU to shutdown

I was wondering if anyone else experienced this issue and has knowledge on how to fix it. I am running an AMD Phenom 9850 Quadcore under Ubuntu Lucid 10.04. Problem: Running my old Windows 98 SE in ...
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1 vote
1 answer
573 views

cpufreq policy acting weird, current policy max gets throttled

I'm using laptop-mode and the ondemand governor. When I do cpufreq-info I get analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 1 CPUs which need to have ...
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3 votes
1 answer
2k views

disabling cpu throttling for all CPUs and cores, installing ATLAS

I'm installing ATLAS on a multicore system. It runs Rocks OS, a linux distro specialized for cluster computing. I need to turn CPU throttling off. According to a guide at csrc.tamu-commerce.edu, "$ /...
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2 votes
0 answers
3k views

How to change cpufreq settings in Kubuntu

I have been using Kubuntu, and I would like to change the cpufreq settings. My understanding is that there is no applet for that, and I would have to do it with a script. So I run a command like ...
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2 votes
1 answer
191 views

Linux PC randomly halts [instant power off] and doesn't power back on power switch unless AC power is cut

my Linux pc is randomly powering off. the working configuration: ATI drivers (fglrx) not loaded cpufreq governor (either performance or powersave) and frequency are set at boot (default settings ...
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