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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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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155 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
240 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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2answers
2k 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
68 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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88 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
63 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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1answer
376 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
403 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
1k 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
114 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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221 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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0answers
127 views

Ubuntu Gnome 14.04 - 100% CPU usage alternating between cores

I've noticed my Ubuntu Gnome 14.04 has been getting a bit sluggish lately - things like Gnome Shell overview animation are jerky where they were lightning fast, Elder Scrolls Online is stuttering and ...
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0answers
109 views

Intel graphics driver installer, now the CPU fan is rarely quiet

I have an Optimus chipset: Intel HD 4000 (i7-3635QM CPU) Geforce 640m I don't care about the NVIDIA card, so I didn't try to install any proprietary drivers for it. So: I was having a ...
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1answer
59 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
492 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
68 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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2answers
90 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
645 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
66 views

Getting Linux to downclock and lower the V-core of my CPU at idle

So when I boot into my Windows 8 partition, Windows automatically downclocks my CPU and lowers it's V-core so that the idle temps of my i5-4570 CPU go down to 25 C. Now on Ubuntu on the other hand, ...
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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
97 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
110 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
190 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
36 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
70 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
112 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
68 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
470 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
74 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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68 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 ...
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285 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
105 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
624 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 ...
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268 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
493 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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1answer
381 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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29 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 ...
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1answer
52 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
1k 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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1answer
2k 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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0answers
860 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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256 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
642 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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1k 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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77 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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1answer
128 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 ...
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615 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: ...
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2answers
23 views

Changing Ubuntu version

So, my friend lent me his Ubuntu 12.10 boot CD, and it's the 64-bit version, but my processor is 32-bit. So, after installing, I was wondering if there's a way to install 14.04 32-bit from inside the ...