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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Intel TurboBoost not working under 12.04 LTS

Please help me someone :) My notebook has Intel core i5 3337U CPU with Intel turbo boost. Under 12.04 the turbo boost is not working properly. It's frequency maximum is 1.8Ghz but the CPU can run ...
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1answer
2k 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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20 views

cpu requirements for the desktop ubuntu [duplicate]

i have a intel celeron cpu 900 @ 2.20GHZ 2.19 GHz can this handle the desktop for ubuntu ive downloaded the 32 bit due to the 2gig ram and tried to run it on virtualbox first time did not work now i ...
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66 views

Cannot Upgrade From 11.10 for My SAMSUNG X05 LAPTOP [duplicate]

Installed Ubuntu 11.10 desktop, my SAMSUNG X05 LAPTOP work perfectly now. But while what to upgrade to 12.4 LTS or 13, it tell me that my features not supported by the CPU, and cannot install. Does ...
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135 views

Upgraded 13.04 to 13.10 and it doesn't read my quad core

Basically as the question says. 13.04 read all quad cores fine; not sure why 13.10 isn't. Running 64-bit on alienware m11x r3.
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183 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
403 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
140 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
1k 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
126 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
143 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
218 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
212 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
127 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 ...
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1answer
134 views

How to log and export CPU Usage over time?

I am currently doing a project at school about sound proofing a PC Case and need a way to log the CPU load, so that I can graph it against sound and temperature of the case. I am very new to using ...
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2answers
7k views

High CPU usage even when no application is running(Desktop)

I always have high CPU usage in Ubuntu in every version of it that I have used. I have been using Ubuntu from 10.04 version. My CPU usage even at idle is more than 30% for each core(unlike Windows 7 ...
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1answer
2k views

How to use cgroup in ubuntu 13.04

I'm trying to learn how cgroup works on Ubuntu and seems that cgroup doesn't work in Ubuntu 13.04. I am using the answer to this question How to set cpu limit for given process permanently. Cpulimit ...
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1answer
26 views

13.04 Installs the wrong ISO [duplicate]

When I download the 64 bit 13.04, no other options are given and the download just begins. I am using a MAC and this default is the wrong processor.
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0answers
309 views

In Ubuntu 12.04, odd whining/humming coming from left side of MBP (2,2)

I have been searching for a similar issue to mine, but unfortunately haven't found anything. Anyhow, this week I installed 12.04 on my 2006 MBP (2,2). Pretty much everything seems to work OK, but ...
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1answer
3k views

is it true that Chromium uses more cpu than firefox?

Hi I was a firefox user but I switched to Chromium a while ago and I feel like Chrome uses uses more cpu browsing the web than firefox... I have this psensor app installed on my ubuntu 12.10 which I ...
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2answers
901 views

Processor temperature when just browsing the web is 55-60 C

I'm running ubuntu 12.04 on my laptop. It has an Intel® Core™ i7-3537U CPU @ 2.00GHz × 4, 8 GB ram, and an AMD Radeon HD 8730M It also has a Intel HD 4000 but i'm using AMD I have nothing else open ...
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1answer
993 views

mount.ntfs taking up 99% of cpu [closed]

I dual-boot Ubuntu and Windows with WUBI, version 12.04, and have been recently running into some issues. Every once in a while, I run top and see that mount.ntfs is taking up all of my cpu. It is ...
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2answers
2k views

Permanently change maximum CPU frequency

So far I've found temporary solution for my problem at Maximum CPU frequency stuck at low value, but the question that I have is how to make it permanent. Right after reboot, frequencies are set back ...
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3answers
1k views

Hyperthreading on 32-bit but not on 64-bit?

I have a strange situation. I have two computers with identical hardware, both Core i5, exactly the same model. The only difference is the OS, one has 12.04 32-bit and the other one has 12.04 64-bit. ...
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1answer
2k views

Xorg/Compiz is using massive amounts of CPU. What to do?

I am using Ubuntu 12.04. I've been trying to figure out what is causing my Xorg and Compiz to frequently come close to maxing out my CPU usage for weeks now. Essentially, during normal use, both ...
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1answer
353 views

lowering CPU load average, Kubuntu 12.04

I've got a question about lowering CPU loads, if I understand correctly when I issue the 'uptime' command I get 3 values representing 5, 10 and 15 minutes of average CPU load. My current stats are ...
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1answer
3k views

which is the best ubuntu for intel atom processor [duplicate]

Which is the best Ubuntu for Intel Atom powered notebooks? I have already tried 13.04 but that did not work. please help.
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0answers
127 views

Overclocked CPU speed not detected in Ubuntu 13.04

I have a stable overclock that I have been running since Ubuntu 12.04. However, after upgrading to 13.04, the available frequencies only includes up to my stock speed as per: cat ...
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1answer
30 views

Running Ubuntu on PC- A Couple of Questions?

I am currently thinking about buying a new laptop, and I want to buy a PC for its good price to hardware ratio and run Ubuntu on it because I do a lot of app and web development work. My questions ...
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2answers
122 views

Machine stops running randomly

I recently installed Linux MINT 15 64bit as a guest in a UBUNTU 12.04 LTS host. Everything is working just fine, except that the complete machine turns off completely (the host, physical machine) and ...
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192 views

12.04 gvfs-afc-volume CPU usage high, no iphone

I've notice many people reporting this problem and I'm suffering from it too on Ubuntu 12.04. I'm using GVFS for android support, but I rarely connect to any GVFS devices yet this problem appears all ...
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1answer
226 views

Logical / Physical processors supported [duplicate]

Can anyone tell me the maximum number of logical as well as the maximum number of physical processors supported in the latest release of Ubuntu? In the documentation online, I've found the 8 ...
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4answers
721 views

CPU overheating (Acer 4730z + Ubuntu 12.10)

After using the pre-installed Windows Vista on my Acer Aspire 4730z for over 4 years, I decided to switch to Ubuntu. I installed a brand new SSD with Ubuntu 12.04, which I later upgraded to 12.10. ...
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1answer
298 views

high CPU load all the time

Simply, My PC is Crap, it has Pentium 4 3GHz 2MB Cache CPU with Intel graphics G31/G33 and 1GB RAM on normal work, such as using firefox, the CPU use is more than 50%, and if i opened more than 5 ...
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1answer
61 views

Is there a way to get some notification if my ubuntu 12.04 uses 90% of CPU

Now a days, My computer is getting stuck as I m running lot of programs.What I need is a some kind of notification when processes become 90% or so.
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2answers
655 views

fancontrol on no pw-capable machines

I've installed Ubuntu 13.4 on my Alienware m14x and noticed one thing, cpu gets as high as 70 degrees centigrade (with nothing resourceful running) and cooler doesn't respond to that, just stays calm ...
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2answers
5k views

How to set cpufreq governor to performance?

I am on Ubuntu 13.04 64-bit. I have heard that setting the cpufreq governor to performance will, well, increase performance. Unfortunately, I am a bit of a newbie at this sort of thing, and I am not ...
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2answers
589 views

Ubuntu running slow and laggy [duplicate]

My Ubuntu has been running pretty slow, but I don't know why. I have the latest updates and all. I installed Ubuntu i368 on a AMD processor does that effect the speed? Thank you.
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1answer
288 views

How to automatically slow CPU instead of starting fans?

In Windows' power options, you had the ability to configure your system to use either 'active' or 'passive' cooling schemes. In the 'active' scheme, the fans would start running faster as the CPU got ...
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1answer
611 views

AMD FX CPU drivers/patch

I am using Ubuntu since 2009 on notebooks with Intel CPUs. However now, that I am using AMD's FX 6300, I am interested in knowing if there exists anything from Ubuntu (specifically any kernel ...
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1answer
143 views

htop showing duplicate applications with very odd bizarre results upwards of 20,30,40 or more, see screen grab

I have attached screen shots of htop and it's bizarre results. Can anyone explain what is happening here? It shows this new copy.com app taking up like 500% of my memory if you count it up.
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1answer
452 views

Acer TimelineX 4820TG fan speed out of controll after install Ubuntu 12.04

Laptop Acer Aspire TimelineX 4820TG. Dual boot Windows 7 and Ubuntu 10.10 Despite some small bugs the machine runs fantastic with this software. After installing Ubuntu 12.04 the cooling fan runs ...
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3answers
4k views

Dropbox very high CPU usage without any actual data transfer

The Dropbox process constantly clocks more than 50% CPU usage sometimes going up to the higher 80s and 90s. At the same time it does not even upload/download the files it is supposed to. The progress ...
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1answer
62 views

What is hammering the CPU when top is not running?

On Kubuntu 12.10 I can see with the KDE System Monitor Plasmoid that the CPU usage is fluctuating between 60% - 90% on both cores. As soon as I open top it goes down to 3% - 10%. I thought that the ...
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1answer
2k views

How to troubleshoot high cpu problems related to postgres and postmaster service?

I'm using an open source(RHCE 6.2) based machine running SIEM software , when i do the top command i see postgress postmaster both eating 96% of cpu usage? Is there a way to pin-point or see ...
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2answers
5k views

Why is the Intel Turbo Boost Mode not running at maximum speed?

I tested CPU frequencies with either the Intel tool i7z and turbostat from the linux-tools package (sudo modprobe msr, sudo turbostat) and what I find as maximum frequencies for two different ...
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1answer
70 views

high cpu linked to unresponsive websites?

I have two websites on an ubuntu server. None of them are responding when I try to access them on a browser. So I sshed into my ubuntu server and ran the top command. I noticed that three processes ...