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Questions tagged [cpufreq]

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1answer
218 views

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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1answer
336 views

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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0answers
24 views

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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0answers
20 views

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 ...
0
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1answer
37 views

CPU run only at limited frequency

After upgrade to new CPU I have found that CPU is not running at max. frequency. I looked BIOS and I found that values in it are correct, i.e. value for normal frequency and value for boosted ...
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0answers
413 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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0answers
254 views

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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0answers
553 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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0answers
1k 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 ...
2
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1answer
3k views

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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0answers
248 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 ...
1
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1answer
384 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 ...
1
vote
1answer
562 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 ...
0
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2answers
131 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 ...
0
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1answer
131 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 ...
2
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2answers
3k 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 ...
3
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2answers
3k 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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0answers
135 views

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 ...
2
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0answers
532 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 ...
2
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2answers
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 ...
0
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1answer
97 views

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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2answers
807 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 ...
1
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1answer
549 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 ...
3
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1answer
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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0answers
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 ...
2
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1answer
176 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 ...