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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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: ...
0
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1answer
132 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
164 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
305 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 ...
3
votes
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 ...
0
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1answer
221 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:
4
votes
1answer
142 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 ...
2
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1answer
164 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
9k 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 ...
7
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1answer
3k 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
27 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
377 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
4k 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
1k 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 ...
3
votes
1answer
1k 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 ...
2
votes
2answers
3k 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 ...
3
votes
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. ...
2
votes
1answer
3k 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 ...
1
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1answer
446 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 ...
0
votes
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
136 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 ...
0
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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
137 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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0answers
230 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
347 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
806 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
336 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.
5
votes
2answers
729 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 ...
0
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2answers
646 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.
4
votes
1answer
341 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 ...
0
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1answer
728 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 ...
0
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1answer
187 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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votes
1answer
550 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 ...
5
votes
4answers
6k 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 ...
1
vote
1answer
75 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
3k 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 ...
2
votes
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 ...
0
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1answer
72 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 ...
12
votes
2answers
4k views

Maximum CPU frequency stuck at low value

I have observed a problem with Ubuntu 13.04. The problem was not there on 11.10 I used earlier. The maximum CPU frequency is stuck at 2GHzon my Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz (Dell Lattitude ...
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3answers
120 views

CPU Upgrade Issue

Is it possible to upgrade CPU (ex: from AMD Athlon II X2 to Phenom II X4) without any problems? I means just replacing the old cpu with new cpu at same socket and booting ubuntu with any problems or ...
0
votes
1answer
785 views

is intel turbo-boost option good for life-time?

here is intel-core-i-7 with 2.8 Ghz resp. 3.5 Ghz as turbo-boost option. with this question I refer to this link: Does Intel turbo boost work in Ubuntu? Is option of turbo-boost not harming the ...
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0answers
282 views

High CPU temperature when using GNOME

I have ASUS Extensa 4220 laptop.If I install Kubuntu (any KDE-based), then the CPU temperature looks normal for a long time (now it is 74 degree Celsius). But when I install GNOME-based distros, then ...
3
votes
2answers
278 views

Taking The Cores Offline

I have Intel® Core™ i7-2670QM CPU @ 2.20GHz × 8 process which has 4 physical cores and 4 logical cores. Most of the time i been on AskUbuntu, Watching videos, Basically no processor hungry ...
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1answer
246 views

Ubuntu Compatibility

I'm in the process of building a computer for a customer who has requested Ubuntu 13.04 to be installed could someone tell me if the following components are compatible. CPU: Pentium G2020 ...
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1answer
2k views

Should I install amd64-microcode? [closed]

This is my system: AMD Phenom II x4 960T (unlocked to 6 cores) 8GB 1066 DDR2 RAM Gigabyte Radeon HD6670 1GB DDR3 (AMD Catalyst 13.4 propriety driver) Ubuntu 13.04 at 1920x1080 60Hz Dual boot with ...
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1answer
137 views

Ubuntu 13.04 only detects one of my processors

processor : 0 vendor_id : AuthenticAMD cpu family : 18 model : 1 model name : AMD A6-3670 APU with Radeon(tm) HD Graphics stepping : 0 microcode : 0x3000027 cpu MHz : 2781.169 ...
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5answers
10k views

Ubuntu 13.04 ram and CPU maximum support? [closed]

I'm learning about ubuntu, but I do not know the ubuntu 13.04 Ram and CPU support up to how much??? hope you help me
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1answer
1k views

Why does CPU usage spikes to 90% and more after wake from suspend on Ubuntu 13.04?

On an Acer C7 Chromebook running ChrUbunutu (not CROUTON) I noticed a problem after moving to 13.04. If I put the system to sleep and then wake it up both CPU cores spike to 90%+ usage. Soon after ...