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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ASUS X101h high temperatur

I have ASUS X101h netbook and installed all debian/ubuntu/arc/redhat/fedora etc.. distros. In all situations, virtual device temperature and CPU temperature is too high.(When I open firefox and open ...
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133 views

Why my PC turned off unexpectedly?

Let me tell the complete story. I have a normal PC with monitor, CPU, UPS, mouse and a keyboard. I use Ubuntu 12.04 LTS. For the last 15 days my computer is shutting down unexpectedly. Here in my case ...
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1answer
192 views

provide more than one processor with taskset

I am using taskset to assign CPU cores 4-7 to a java process that normally uses ~200-400% CPU. The cores 4-7 were isolated on boot so only the java process should run on them. Eventually taskset ...
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2answers
301 views

Why does Ubuntu only recognize four processors?

I have ubuntu 14.04 and windows 7 in dual boot. My processor is the Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz. The problem is that ubuntu detects only 4 core but they should be 8 !! Is it a known ...
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1answer
112 views

Psensor warning - What does it mean?

I installed Psensor because I have had a new comp with problems, it sometimes freezes up on me. This might be caused by heat but it could be another cause. After implementing all sensors, Psensor ...
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2answers
461 views

how to fix ubuntu overheating

I'm new to Ubuntu but not to Linux and this is the first time overheating has been an issue for me. I'm using the latest version with all the updates installed and my computer has a Intel Core ...
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0answers
172 views

Java & High CPU usage

I use a certain java application to trade the stock market and it consumes 90% my CPU power. And the CPU temp usually remains around 90c. This is a real headache. What causes this problem and what are ...
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85 views

CPU usage varies from 0 to 100. Strange waveform

so I have a strange problem. I'm currently using an old Thinkpad T61 and Ubuntu 14.04 LTS, although this same problem was also happening when I had elementary OS Luna (based on ubuntu 12.04 LTS) ...
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1answer
1k views

lm-sensors not detecting my fan

sensors-detect detects my system perfectly: # sensors-detect revision 6209 (2014-01-14 22:51:58 +0100) # System: Acer Aspire E1-572 [V2.14] (laptop) # Board: Acer EA50_HW It detects an Intel ...
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1answer
894 views

AMD APU-A4-5000 processor issue

I have recently installed Ubuntu 14.04 on my Toshiba Satellite C50D-A 40010 Laptop (PSCGYG-00J00J). My AMD A4 processor's speed is 1.5GHz but Ubuntu shows it as 800MHz. dharmesh@home:~$ cat ...
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1answer
94 views

CPUs usage 100%

System is an Atom(MSI Wind Notebook) that was upgraded to 14LTS from 12LTS. Both CPUs are running @ 100%. System Monitor doesn't show anthing but 6-0 % usages. Some spikes of the xringd, compiz, munin ...
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245 views

Cpu temp at 70°C, fans at minium

I'm running Ubuntu Server 14.04, and the cpu temp is at 72 degrees, but the fans are still at minium. I Can just hear them. Normally they are noisier than planes. My cpu overheats if the fans don't ...
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1answer
736 views

indicator-multiload (System Load Indicator) don't show cpu usage correctly

I have accidentally deleted CPU usage percentage from indicator-multiload menu and now I can't remember what it syntax looks like and can't go back to how it was. Possibility 1 (simplest one). Can ...
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3answers
17k views

How I can disable CPU frequency scaling and set the system to performance?

My processor is running at 40% of its maximum speed, I want it to use 100% of the speed, all the time. I searched on Google but the tutorials are very old and they all differ. So, how can I ...
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1answer
83 views

CPU Temparature above threshold

My PC is running Ubuntu 14.04 currently. For last two days, the PC does not turn on. On running recovery mode, the message "CPU Temperature above threshold" shows. Sometimes the PC do start, only to ...
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1answer
223 views

Intel i5 with speedstep

I have an intel i5 @ 1.70Ghz and in Windows 8 I regularly saw it spike to as high as 2.26Ghz and once to 3.1Ghz. Using 14.04 LTS, is my proc behaving the same? In scaling_available_frequencies I'm ...
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1answer
77 views

Ubuntu Linux 14.04 LTS Server Edition information need

I was wondering what's the maximum RAM, and maximum CPUs does the Ubuntu Linux 14.04 LTS Server Edition can handle. I found a server computer I want to buy, which is a SuperServer 4048B-TRFT. I don't ...
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2k views

What causes high CPU usage by mount.ntfs?

I'm in Ubuntu 14.04 64-bit. mount.ntfs use high CPU--40%. I have Intel Core i5-3210M. Why is this happening? lsblk: NAME FSTYPE SIZE MOUNTPOINT LABEL sda 465.8G ...
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1answer
545 views

How do I discover my socket type?

I want to upgrade my CPU, but Ubuntu's "About This Computer" window only gives me "Intel® Core™ i3 CPU 530 @ 2.93GHz × 4", so no information on the connector/socket type. So far, I've tried the ...
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1answer
3k views

Does my computer have 1 or 2 CPUs? (cpuinfo and lscpu differ)

When I run cat /proc/cpuinfo I get the following output (only the relevant line included): cpu cores: 1 However, lscpu gives me the following output: CPU(s): 2 Which of the two is correct, and ...
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1answer
249 views

Hardware Virtualization not possible, virtualbox alternatives?

I have two processors, but virtualbox won't accept that unless I have hardware virtualization (vt-x) enabled, for which my bios setup doesn't give an option, and the option was never added in bios ...
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2answers
752 views

High CPU usage compared to WinXP. Common aps and actions use 100% CPU cycles

I'm running Lubunto 14.04.1 LTS. PC is a 2004 HP ze4200 laptop: 1.8 ghz Celeron M with 1 gb RAM and 80 gb drive. Was running fine on WinXP SP3 and I cleaned the drive off to test Lubuntu 14 LTS. No ...
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1answer
186 views

Can I disable processor drivers

My Toshiba laptop freezes when I plug in the AC Power cord.I fix this problem in windows 7 by going into Safe Mode then Control Panel > Device Manager > Processors and disable both of them. What I am ...
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1answer
533 views

Much lower temps on Ubuntu [closed]

I've noticed that CPU temps and GPU on my laptop are much lower on Ubuntu than Windows 7. On Windows temperature is like 50 celsius to 58 and on Ubuntu 40 to 50 max. Cooling is also much cooler on ...
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1answer
99 views

Will Ubuntu continue working properly after a new motherboard/CPU is installed?

So, I installed the new motherboard and new CPU. Then powered on the PC. The bootstrapping went fine and all seems to work. But I have doubts. Do I need to do something?
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121 views

Is this CPU architecture information from lscpu normal?

With command lscpu I have output as follows: Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: ...
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2answers
2k views

I want to find out if my Lenovo laptop has a Sandy or Ivy Bridge

Is there a command or a register to find this information on my laptop? I need to know it before I install Intel pstate. Thanks. PS This is the result from the command from ...
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0answers
17 views

How do I check the current frequency of my CPU? [duplicate]

I've been trying to find some information on this but seem to only find things similar but not exactly the same. I'm using Xubuntu on my notebook with an core i7 processor which does hyper-threading ...
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1answer
155 views

Respect BIOS-specified CPU speed without kernel patches, etc. in 14.04

I've got a machine running "in the wild" in a very hot environment running an AMD chip which is overheating. I don't have physical access to the machine, but I have had someone change the CPU clock ...
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1answer
199 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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1answer
316 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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2answers
44 views

Ubuntu Installation Intel [duplicate]

I would like to install Ubuntu 14.04 but i saw on the file i downloaded that is for AMD 64 bit processors. My Pc-Desktop has an Intel Core i7 64bit proseccor and i was wondering if is it ok for my PC ...
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2answers
108 views

32-bit OS on a 64 bit processor [duplicate]

I have a laptop with a 64-bit processor, but by accident i installed the 32-bit version of Ubuntu 14.04. i can always back my data up, and re-install Ubuntu, but i want to know if using 32-bit will be ...
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1answer
259 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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1answer
84 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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1answer
658 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 ...
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1answer
132 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 ...
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380 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 ...
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1answer
160 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 ...
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1answer
2k 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
3k 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 ...
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1answer
2k 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 ...
3
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1answer
517 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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1answer
80 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
3k 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 ...
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3k 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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412 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 ...
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1answer
1k 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 ...
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1answer
2k 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: ...
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0answers
97 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. ...