CPU stands for Central Processing Unit, and is the main processing chip used in every computer. Brands include Intel, AMD and ARM. CPUs are commonly available in 32- and 64-bit, and come in a variety of frequencies or with multiple cores.

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apt-build on ubuntu, if I change processor will give problem?

I installed apt-build on Ubuntu, it is a program that compiles and installs programs. It compiles optimally for the user processor and this makes programs run quickly. But I thought what if I change ...
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1answer
40 views

Changing cpu from intel to amd

I currently have two computers using ubuntu, I want to switch the hard drives of the two so the one I use more has more space. My problem is one of my computers has a intel cpu and one has a amd CPU, ...
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284 views

lm-sensors not showing CPU temperature?

I have a machine running on top of AMD Opteron 6380 (16-core) x2 CPUs. OS details are as follows: Version: Ubuntu 12.04.3 LTS (precise) uname -a: Linux sysname 3.5.0-23-generic #35~precise1-Ubuntu ...
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2answers
121 views

How to enable cpuset on Ubuntu 12.04?

I have set up CPU sets with cset in Ubuntu 12.04, but they are not respected. Processes just use all the CPU they can, no matter what set they are assigned to. It seems that cpuset is not enabled. ...
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1answer
489 views

Lubuntu Task Manager always shows CPU usage at 100% even at idle

Is there a way to find out what application is causing the high CPU? Top shows nothing eating up the CPU. Even at idle my CPU is at 100%. Never changes. Never goes down. Always at 100% no matter what. ...
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115 views

broadcasting from 2014, Imac G5 PowerPC

i´ve got this Imac G5 PowerPC 2Ghz & 2GB SDRAM and i got it for free! i´m not an fan of apple but i thought that the specs were pretty nice for emulating snes gba and psx, however there are no ...
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0answers
55 views

MacBook Mid 2008 use both CPU cores/Deactivate nolapic

I'm quite new to this community so bare with me if I happen to do anything wrong. I've got a problem with my MacBook 5,2 (mid 2008) running Ubuntu 13.10. It detects only one core, though the System ...
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165 views

ubuntu 12.04 Init process provokes memory leak and CPU intensive usage

I have lately been having some memory and CPU issues with init process. After rebooting, the memory used by it keeps increasing at quite high pace, and after half hour it occupies all the memory RAM ...
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1answer
211 views

F2A85V-PRO motherboard with AMD A10-5800K processor issue with linux systems [closed]

Since I bought my new machine - F2A85-V PRO motherboard, AMD A10-5800K processor and 16GB CORSAIR RAM, Im facing problems with installing every x64 based linux distribution. But not only installing. ...
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70 views

Xorg High CPU When Redrawing

For about the past week or so, xorg has been going crazy whenever the screen updates, for example scrolling a webpage, or just moving a window around. I can hear the fan turn up, and there is a huge ...
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0answers
415 views

High CPU usage in any browser

For about the last week, browsing the web from Chrome beta, Chrome stable, or firefox causes unusually high cpu usage. It Idles OK, but spikes a fair amount, but loading any page, with or without ...
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2answers
932 views

Ubuntu 12.10 gnome system monitor high cpu usage

I am totally new to Ubuntu. I tried to install numerous times, but always removed it because of loud fan noise. Me and my Bro have the same Notebook, a HP Compaq 615, and what grabbed my attention ...
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1answer
729 views

How can I see my System details in a Graphical way? (in Lubuntu)

I am new to LUbuntu. In Windows, if I want to know my system properties, I see it by going to Control Panel and clicking on the System icon. What are the equivalents of these features in LUbuntu, ...
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1answer
282 views

ubuntu 12.04 - fuser high cpu

The problem is fuser high cpu and server load high. root 20 0 7580 840 692 D 10 0.0 0:00.31 fuser 16061 root 20 0 7580 844 692 D 10 0.0 0:00.31 fuser 16062 root ...
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0answers
40 views

Processor Tunable status according to Powertop

I am absolutely new to the LINUX platform, since I just migrated to Ubuntu 13.10 from Windows8. I installed powertop so that I could assess my processor. The Tunables window of the output returned by ...
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83 views

Laptop with Battery is faster than Power Connection at Ubuntu 13.04

Recently, I found a very strange phenomenon on my laptop. When the laptop is plug-in the power, then the CPUs work slowly, but when it is unplugged, i.e. it works with battery, then the CPUs work with ...
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1answer
2k views

How can I add the current CPU usage to my menu bar as a percentage?

I'm used to OS X and I use MenuMeters in my menu bar to monitor CPU usage as a percentage and memory as used/free totals. I really want to add this functionality in Ubuntu as I'm using it for ...
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1answer
77 views

safe to use Cpufreq

I have a hp pavilion dv5220us with a dual core T2050 (1.6Ghz , 2M L2 Cache , 533mhz Fsb.). I was womdering if it is safe to use CPU freq. the applet for Ubuntu 12.04.
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37 views

ubuntu black screen appears

I am using ubuntu 12.4 in that we have installed 2Gb RAM dual core processor I have installed some of the software like eclipse , SQL . while using these software's few seconds screen goes into black ...
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1answer
270 views

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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1answer
382 views

How do I use all available hardware resource in my Intel® Core™ i7-3517U?

My sony vaio has a processor model: Intel® Core™ i7-3517U It appears to me as being 4 cores but it does not show the threads. What is wrong? How could I fix it? How can I access that information? I ...
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1answer
331 views

How many physical processors does ubuntu support? [duplicate]

How many physical processors does ubuntu support? I have a 4 socket server mainboard with 4 dual core AMD Opterons. Will Ubuntu support all 8 processors. I also have plans to upgrade to 6 core ...
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1answer
461 views

Set A Lower P-State For My CPU (Underclocking)

In Windows 8 you can set a max/min cpu speed percentage allowing you to use your cpu at a lower or higher P-State. For example, my cpu has a default speed of 2.3ghz (turbo 3.2ghz), however using the ...
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0answers
78 views

Why my CPU of 2.1GHz clocks at 800mhz in Ubuntu 13.10?

I've a problem with my notebook DELL INSPIRON 1720. This notebook have a CPU Intel t8100 2.1GHz and it doesn't work perfectly. It works at 800MHz stable, like in power-safe. But when I change the ...
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2answers
527 views

Stop cpu from overheating

When running intensive apps like blender my CPU can get up to 80.C I can manually underclock the CPU from the BIOS but I would like to have my pc detect when the CPU temp gets too high and slow things ...
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1answer
399 views

cpu load not distributed over cores

Under heavy task it seems the cpu load is not spread accross all available cores and fan is triggered wile I am waiting for the opération to perform... Looking at the CPU monitor one CPU is 100% when ...
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0answers
145 views

How to find CPU shutdown temperature? (Think it's called TJMax, maybe not though…)

In Windows there is a program called CPU Temp which shows various CPU temperatures, one which being the temperature at which point the computer will shut down to prevent damage to the CPU. I have a ...
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2answers
236 views

How do I Manually Limit CPU Usage? [duplicate]

I have an old laptop prone to overheating and a good solution I found was limiting it's CPU usage to below 50%. On Windows, I can do this by changing the power plan I am currently using, and altering ...
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1answer
60 views

cpu power mode occasionally changing to performance

The CPU power mode is occasionally changing to performance which causes my laptop to overheat and shutdown :( Is there any way to prevent that?
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2answers
5k views

“Kernel requires x86-64 CPU, but only detects i686” in an Intel Intel Core i7-2600k?

I have a VM installed in my windows 7 PC, and I want to install an Ubuntu 13.04 on it, as a new virtual disk. I have this machine: Intel Core i7-2600k CPU @ 3.40Ghz - 8 GB RAM - 64 bit operating ...
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1answer
365 views

CPU frequency scaling on Ubuntu and Windows

Linux reports my CPU's maximum frequency as 2.40 GHz and min as 1.2 GHz. Windows 8's Task Manager shows the CPU frequency going above 3.0 GHz or below 1.0 GHz on occasion, according to usage. This is ...
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1answer
333 views

Incorrect CPU clock speed?

I have recently purchased a new laptop, and installed Ubuntu. It uses an AMD A8-4500M processor, which, according to the link below, should have a clock speed of 1900-2800 mhz. ...
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1answer
4k views

How to configure cgminer to mine with the CPU?

I installed the cgminer to try to get into a bitcoin mining pool, but I have no GPU. I know that mining with the CPU is not very eficient, but I want to know how to configure cgminer to mine with the ...
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1answer
117 views

Can't Boot An Intel Equipped Laptop From the Burned ISO For 13.10 ISP (X386)

Keep getting an error message that "This kernel requires the following features not present on this CPU: pae". I'm running an Intel Pentium M 2.0 GHz, with 2 GB of RAM on a 60 GB hard drive. This is ...
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0answers
386 views

Corsair Hydro i series cpu cooler fan control

I have been toying with the idea of a Corsair h80i for my dual boot system (win7/U12.10) and mostly use it in ubuntu. I have done some research on the interweb regarding fan control in linux and ...
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1answer
33 views

Which ubuntu 12.04.3 is best for Device lc2430i ? [duplicate]

Which Ubuntu version should I download for new Linux-certified laptop ? Device Name: lc2430i MEMORY: 3.8GiB Processor:3rd Generation Intel Core i5-3210M CPU @ 2.5GHZ X 4 (3MB L3Cache,2C+HT) OS TYPE: ...
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1answer
231 views

Ubuntu 12.04 doesn't recgonize m CPU correctly

My computer is running ubuntu 12.04 (64bit), and I have a AMD Athlon(tm) X4 760K Quad Core Processor which is about 3.8ghz (and an Radeon HD 7770 GPU). Yet, when I type in cat /proc/cpuinfo - I get: ...
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1answer
3k views

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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0answers
197 views

TOSHIBA Satellite U400 kernel 3.10 3.11 3.12 cpu fan

After switching to any kernel above 3.9.11 my cpu cooler acts like cpu was overheating, it spins all the time trying to cool down processor even if it's below 50 Celcius. I don't think it's the distro ...
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1answer
37 views

Weird System performance

I just freshly installed Ubuntu 13.04. My CPU seems to be going from 70 to 30 every 5 seconds or so. Same for the wireless. Weird stuff going on
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2answers
596 views

What temperature is considered bad for my processor? [closed]

I am using the unity Temperature sensor and I have an Intel® Core™2 CPU 4400. If you need more info I would be happy to include more details about my PC that could help. Thanks
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1answer
165 views

High CPU Usage Causes Server Power Off

My first post here, so apologies if anything is missing. I currently have an Ubuntu hosted VPS, which periodically runs a PHP script which does a lot of regex processing and interaction with a local ...
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2answers
2k views

What is vPro, is it Linux compatible?

I saw that some of the Lenovo laptops have "vPro" processors, which enable special management features: ...
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1answer
130 views

How to restore the cpu frequency defaults or to align the frequency at will?

I really new at ubuntu and linux so i am not capable of understand the following: usage: update-rc.d [-n] [-f] <basename> remove update-rc.d [-n] <basename> defaults [NN | ...
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3answers
2k views

Sony Vaio VPC-EC Series, CPU Temperature very high.

I know this has been asked quite a few times before, but after some intense research I still could not fix my CPU problems. I'm running Ubuntu on a Sony Vaio from the VPC-EC series. Under windows 7 ...
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1answer
157 views

Wich version of ubuntu should i use with my processor [duplicate]

I bought a laptop a while ago and i'm sort of trough with windows. I wanted to try ubuntu but I don't know wich version I should take. I got a Samsung NP300E5A-S02NL It has a Intel I3 ...
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2answers
286 views

Why does CPU usage spike just when Transmission is finishing a download?

I noticed this when I was watching a video and it started lagging just before until shortly after a download finished. The second time I monitored it using top and the cpu rises above 100%. My ...
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2answers
66 views

Is there any way to retain word 2010 format?

I have some resumes and other documents that are really format dependent. They were originally created with Microsoft Word 2010, and is there any way to put them into ubuntu and have them still be ...
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1answer
219 views

How to resolve excessive CPU usage?

I just installed Ubuntu 13.04 on my brand new notebook and PU usage is insane. I'm a new Linux user. Can somebody help me? Specs and system monitor:
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1answer
135 views

Which file is called or event is fired when we plug-in / plug-out power supply to the laptop?

Everytime I plug-in or plug-out powersupply the CPU frequency is changed to 'powersave' which results in reduced efficiency. I need to be on 'performance' all the time. I've made a small java utility ...