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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High CPU usage after startup - low after suspending [on hold]

I'm using a Compaq nc6320 with an Intel Core 2 CPU T5600 processor and an SSD. I used to have windows xp and ubuntu 12.04 (dual boot) on it and 12.05 worked just fine. It was quite fast on start up ...
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1answer
284 views

Ubuntu 14.04 Slow, High CPU Usage

I experienced CPU strange behavior after installing Ubuntu 14.04, at 5 or 10 minutes, CPU usage suddenly increased about 50%, that's really slow my laptop down (Ubuntu 13.10 worked fine by the way) ...
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1answer
24 views

How to check the cpu temperatures core by core?

I have a Phenom X3-8450e which has a total of 3 cores. But when i ran "sensors" on a terminal this is what i get. user@PC ~ $ sensors atk0110-acpi-0 Adapter: ACPI interface ...
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3answers
9k views

CPU temperature monitor for 14.04LTS?

Is there a way to configure psensor so the temperatures read out in real time in the panel so it could be read at a glance? So far, in order to read the temperature I have to click on the applet ...
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1answer
55 views

Laptop fan speed too low when not docked

I'm using Ubuntu 14.04 on my laptop and things are great except that it gets quite hot sometimes. I'm using sensors (lm-sensors) to report temperature and fan speed. I run a Thinkpad T430s with Ivy ...
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1answer
145 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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1answer
35 views

Is my CPU-Temperature OK?

I just brought my Laptop to a Service-Center to get it cleaned. Now under normal use (using apt-get, watching videos, web-browsing...) my cpu-temp is between 55-70°C. If I put it under Stress with ...
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7answers
74k views

How do I get the CPU temperature?

How do I get the CPU temperature.
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2answers
1k views

How to set both dual cores to userspace governor

I am trying to set both cores in my cpu to userspace governor by editing the contents of /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor and ...
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1answer
374 views

One CPU shows up as 1200 Mhz and other 3 as 800 Mhz, is this normal?

I recently check my system information with ubuntu's app "System Profiler and Benchmark". And I get 1 CPU running at 1200 Mhz and the other 3 running at 800 Mhz. It's correct?, Intel Core i3-2310M ...
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1answer
45 views

Which 14.04 version should I install? [duplicate]

My specific question is that I have 3.9GB of ram, but I don't have an AMD processor. I have the Intel i5. Do I install i386, or the AMD x64 version of 14.04? Let me know if there are other specifics I ...
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0answers
179 views

High CPU load - Ubuntu 14.04

I noticed that sometimes when browsing (with other processes in the background), I get very high CPU load for the browser process (over 100%) and the computer becomes really slow. I tried switching ...
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1answer
222 views

Ubuntu 14.04 Kernel Update 3.13.0-30.55 made my Laptop CPU gets overheated

I just received an update to the linux kernel of Ubuntu 14.04 from 3.13.0-30.54 to 3.13.0-30.55. After I upgrade it the CPU on my laptop is around 70 to 80 Degree Celsius. while on the previous kernel ...
5
votes
1answer
3k views

High CPU usage while playing Flash and using Jupiter

Hi guys from what I see by Googling around it's a common problem but somehow all the threads I've seen end in "Oooo Flash is terrible" and the post dies there. I'm experiencing a very high CPU usage ...
0
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1answer
25 views

Lots of Memory and CPU being used on nothing

I noticed over the last week or so my computer is using a lot of CPU and Memory when nothing is obviously running (even after rebooting). With only my browser open it's using 20% CPU, 4.0 GB Memory ...
2
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2answers
3k 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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0answers
48 views

Fan is always running (CPU)

Hp mini 1000 Using gnome shell 3.4.x When I installed this os the fan did not always run and it seems after updating now the fan has and is always running... Whether plugged in or not... Now its ...
4
votes
1answer
2k views

CPU usage goes to 100% when I lock the screen

Whenever I lock the screen, after a certain amount of time, the CPU and the CPU fan go to their limits, and they return back to normal the moment I unlock the screen again (as shown by psensor). How ...
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2answers
1k views

How to enable higher CPU frequency on Lubuntu 12.04?

I have a Dell Latitude D430 laptop and I am unable to get the CPU to scale up to it's max 1200MHz. I have installed the indicator-cpufreq tool and also the cpufrequtils package. However, my CPU is ...
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1answer
60 views

How to solve the problem of high CPU load?

After installing Macubuntu pack processor became heavily loaded, I replaced Ubuntu 64-bit with Xubuntu 64-bit, but the processor is still heavily loaded when performing simple actions (open file ...
0
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0answers
65 views

xubuntu: compiz using 100%+ cpu

I seem to be experiencing an issue with Compiz in terms of cpu usage. The only thing I've been doing differently (been running this system for a month or two with no issues) is I have been running ...
0
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1answer
71 views

What is the 'normal' CPU temp?

What is the 'normal' CPU temp should be? My CPU temperature normally (when the system is idle) remains around 60C and often jumps up to 80c or more. dino@mika:~$ sensors acpitz-virtual-0 Adapter: ...
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2answers
2k views

Run program with only 1 CPU core

I'm trying to run a bunch of scripts related to a gaming server in Terminator. The only problem is when I do this, Terminator detects all my CPU cores and the PC lags. Is there any way to start it up ...
3
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1answer
212 views

Ubuntu CPU Fan at 2200 RPM and CPU top at 90°C

I have a problem with my CPU heat. I'm running Ubuntu 14.04 (64bit) and I have issues with the cooling. I know it might be a hardware issue, but I've checked, the fan is running and in my GUI I use ...
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0answers
53 views

Ubuntu high CPU usage

I have a Acer Aspire V5-552G laptop, all seems to work fine but some software, in particular games and graphics are over using the cpu. Such as Cheese, here is the top output: PID USER PR NI ...
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1answer
147 views

How do I know my fan is working in Ubuntu

I just bought a brand new netbook and am worried the fan isn't working properly. lm-sensors does not detect a fan, I can't hear a fan, and can't feel air blowing out of the fan area. The netbook is ...
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0answers
139 views

CPU fan kicks in to full gear when i try to install ubuntu 12.10 or LTS

Whenever I try to install (DUAL BOOT WITH WINDOWS 7) both versions of Ubuntu desktop on my PC the CPU fan starts spinning so fast that I couldn't even go through the installation for fear of my CPU ...
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0answers
17 views

nautilus consuming too much cpu for retrieving thumbnails for applications

some screen shots about the problem Now I'm killing the program. The output in terminal for nautilus is GLib-GIO-Message: Using the 'memory' GSettings backend. Your settings will not be saved or ...
5
votes
2answers
608 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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1answer
30 views

Whenever I install Ubuntu it says please use a kernel appropriate for your CPU

Whenever I try to install Ubuntu it says the kernel is not appropriate for my CPU. Or tell me an OS that's Minecraft capable and for an i686 processor.
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1answer
151 views

ubuntu 14.04 - only performance and powersave governor available (i5 4.gen)

After updating my ubuntu 13.10 to 14.04 there only these to govenors available for my cpu, instead of additionally ondemand and conservative. cat ...
0
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1answer
270 views

Is this CPU usage for TeamViewer on Ubuntu normal? If so, are there any better options?

This image was taken while logged in remotely via TeamViewer to my workstation. There are four TeamViewer_Desktop processes open (why?), two of them taking a large amount of CPU (why?). I tried ...
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0answers
110 views

Ivy bridge i3 recognized as Xeon e3-1200 [on hold]

Solved Update Apparently the CPU is recognized properly, installing intel graphics won't be necessary. sudo intel-linux-graphics-installer You don’t seem to have an Intel i915 chipset so no ...
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0answers
96 views

Ubuntu 14.04 lost cores on AMD CPU

It seems that I have a problem. Installed 14.04 a few days ago, everything was smooth sailing until yesterday it wouldn't boot up. Recovery mode says that CPU's 1-6 don't respond. After 7 it moves ...
0
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1answer
305 views

CPU temperature is high on Ubuntu

So I have a machine which has both latest *Ubuntu and Windows 8 on it. On windows 8 my CPU temp is roughtly 26 degrees when idle. Now when I boot into Ubuntu, CPU temperature is suddenly 43 degrees ...
0
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1answer
288 views

CPU Fan always on high speed after upgrade to 14.04 [duplicate]

cpu fan always on high speed after update from 13.10 to 14.04 MB Asus P5G41T-M LX V2 It was working nice on 13.10 Output of sensors: atk0110-acpi-0 Adapter: ACPI interface Vcore Voltage: ...
0
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2answers
116 views

get cpu usage in command

I want get cpu usage. I used this command : top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1}' But return 100%. I dont know what to do.
0
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1answer
51 views

System profiler gives incorrect cpu speed?

When I check the System profiler and Benchmark application it gives me incorrect cpu speeds and the speeds tend to vary every time I run the application. Ranging from 1900 to 3900 (3900MHz is what I ...
3
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0answers
55 views

One of my two cores suddenly flatlines at zero percent

I've been using Ubuntu for about three months, and twice now the first core of my dual-core laptop suddenly flatlined at zero percent for no apparent reason, while the second one seemed unaffected. ...
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0answers
165 views

Critical temperature reached for thermal thermal_zone0

I have my laptop (Dell Vostro 3350) overheating using Ubuntu (starting from 11.04 upto 14.04 distributives). In syslog I found the record when shutdown is occured: May 21 11:43:43 mobiled2 kernel: ...
3
votes
1answer
275 views

kworker taking 100% of one core

I updated from ubuntu 13.10 to 14.04. I have a quad core, and one core is pegged at 100% usage because of kworker. I know that kworker generally is doing things on behalf of the kernel, but I don't ...
4
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1answer
98 views

Squeeking noise issue with Asus laptop. Found working solution for Windows, now how to do this on Ubunutu?

My Asus laptop makes a high pitch squeeking noise/sound. It turns out that is has something to do with the CPU and its power saving settings. I have my laptop on dual-boot with Windows 7 and Ubuntu ...
0
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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
107 views

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 ...
2
votes
1answer
92 views

Visual CPU Indicator for Trusty Tahr (with dual/multi-core support)?

A quick finger exercise with google returned the following: Cpufreq Indicator fossfreedom's fork of System Monitor Indicator, probably looking like this (non-visual) neither of which seem to be ...
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1answer
33 views

New processor woes

my motherboard is an ECS c51gm-m and the processor im trying to upgrade to is an AMD Athlon 64 X2 Dual-Core 5000+ 2.6 GHz Processor with 1024KB L2 Cache and 64-Watt Socket AM2 (ADO5000DSWOF) by AMD ...
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0answers
75 views

Cannot load acpi_cpufreq module [closed]

I have been trying hard recently to scale my CPU Frequency from 1GHz (the current frequency) to 1.67 GHz (the maximum frequency) but it won't let me as when I execute sudo cpufreq-set -u 1.67GHz it ...
2
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0answers
274 views

Ubuntu CPU load

I'm new to Linux world, I have a problem with my fresh installation of Ubuntu 14.10 64-bit. My processor is Intel® Pentium(R) D CPU 2.80GHz × 2 with 4 GB of ram and GeForce 8600 GT/PCIe/SSE2. When I ...
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3answers
6k views

Dropbox is taking too much CPU time. How can I fix it?

I recently noticed that Dropbox is taking about 50-90% of my CPU for more than just a few seconds sometimes - mostly when downloading/syncing many or large files. Still, I guess that even when ...
2
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0answers
92 views

Unable to get a temperature reading from CPU [closed]

Following instructions over here, I tried to get something running to show the temperature of my AMD A6 6400K. Unfortunately, the output I get is the following: TurionPowerControl 0.44-rc2 (export) ...