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Intel Xeon stuck at 800mhz CPU Freq on RHEL 6.5

Currently running into a headache trying to figure out why my CPU speed is stuck as such a low frequency. After doing some research, I found that cpuspeedutil does actually control the state of the ...
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59 views

Overclocking and Intel Speedstep in GNU/Linux?

OS: Gentoo CPU: i7 920 (2.66 GHz) Motherboard: Asus P6T Deluxe V2 (BIOS: 1202 (this is the most recent version)) Having overclocked for some years with Speedstep simply disabled to allow for as high ...
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1answer
73 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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2answers
77 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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1answer
93 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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1answer
483 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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2answers
931 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 ...
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61 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 ...
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2answers
677 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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1answer
67 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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471 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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1answer
416 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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1answer
862 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
2k 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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1answer
155 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 ...