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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System hangs when I use Terminal

I just bought a computer with X10DAi Supermicroe mb ,e5-2683 v4 CPUs, two GEFORCE® GTX 1080 and one HD 6450. After I installed Ubuntu 16.04 and tested it for two hour, the system hang on ...
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44 views

CPU frequency is always at minimum, even if CPU isage is 100%

I don't know when this issue began to happen, it might have been since the time I installed Ubuntu (16.04, fresh). I was observing that Ubuntu was unusually slow, environment was choppy and CPU usage ...
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1answer
38 views

CPU scaling: how can current frequency be out of min-max range?

I'm trying to understand why my CPUs don't run at higher frequencies (related link) Can someone explain me how is it possible that when a min and a max are defined, the effective value finally goes ...
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2answers
38 views

Wrong Minimum frequency Core i7 CPU

The problem with my Linux machine is, the frequency reported by the files cpuinfo_min_freq and scaling_min_freq show 1200000 but in Windows it can be slowed down to 900000. This causes my Laptop to ...
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15 views

Xubuntu 16.04 on VMWare throws CPU error

I have Xubuntu 16.04 x64 on my virtual machine. Always everything are working good but today I got an error: When I enter into "Advanced options for Ubuntu" and choose this option My machine is ...
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49 views

CPU is at 100% all the time?

I'm running on Ubuntu 16.04 and for some reason, the CPU is always at 100% even when no application is running. Please help !
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1answer
81 views

Cooling fan never reaches high speed, even if clearly needed

CPU consumption goes very high (which obviously shouldn't) when watching video on Chrome. This is due to some regression that has appeared recently (it wouldn't happen before), but that is not the ...
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18 views

90% CPU USAGE when I watch videos and so much LAG

my Computer LAG every time when I open any video mainly on youtube and the cpu usage Reach on 90% (firefox) and if I use blender or any graphic software that supposed to bug if I have hardware ...
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3answers
296 views

What information does my processor spec contain?

I have Intel® Core™ i5-5200U CPU @ 2.20GHz × 4. I want to know what does every single thing mean. $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 61 model ...
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57 views

Is there a reliable method to determine CPU temperature?

What I would like to ask may seem something like a duplicate, but - according to my recent searches - it is not. I have a Pc with ASUS M5A97 EVO R2.0, FX-8320 and GTX960 and I would like to monitor ...
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1answer
20 views

CPU Running 50% or higher on HP Pavilion dv6

I have been running Ubuntu 14.04 on my HP Pavilion dv6 for 2 and half years now. For the most part, it runs perfect, however recently I have discovered CPU monitors and have realized that my CPU is ...
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74 views

Not shutting down: CPU soft lockup (plymouthd) / self-detected stall on CPU

When I click Shut down in the system menu, it does not turn off but repeatedly shows the errors below. MMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [plymouthd:4693] INFO: rcu_sched self-...
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106 views

AMD A10 8700p overheats on Ubuntu 16.04

I recently got a HP Envy 15 ah150na laptop with an AMD A10 8700p CPU and and R6 8700p integrated graphics card. The problem is that the CPU temperature after 10-15 minutes of usage goes up to around ...
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0answers
200 views

Software and Updater consumes 100% CPU in Ubuntu 16.04

I've upgraded my laptop (Lenovo Z50-70) which has an i7 CPU and 8Gigs of Ram to Ubuntu 16.04 from 15.10. I've been installing updates consistently. I'm using ubuntu with Gnome desktop environment (GDM)...
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1answer
66 views

d a Can't scale frequencies of AMD Turion CPU, it always jumps to lowest

I have similar problem to this: Can't scale frequencies, always jumps to lowest . This time on a HP Compaq 6715B notebook with AMD Turion CPU TL-58 and powernow-k8 cpufreq driver : $ cpufreq-...
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1answer
50 views

HIgh cpu usage for Compiz process on ubuntu 14.04

I'm having very annoying issue: the compiz process eats up to 50-60% of the CPU resources on my dedicated server. I'm not really experienced with Ubuntu. I need to help to disable visual effects and ...
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25 views

Laptop error problem

My laptop Acer travelmate 7750Z, Ubuntu 14.04 Intel core B960 gives every few weeks an error during working. Screenshot: Do I need a new processor?
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0answers
39 views

Ubuntu 16.04 random freezes every few hours

I am using an old AIO PC with a core i5 and every few hours the pc just freezes and doesn't respond to commands, sometimes I get a message saying, BUG: CPU#3 stuck for 23s! In these cases the magic ...
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1answer
66 views

CPUs are overused with internet browsers, maybe Ubuntu+i5+JS don's work well

I'm having trouble with the Ubuntu 14.04 on PCs Intel NUC i5 8 GB RAM SSD HD. They are used mostly with Google Spreadhseets and are high usage of internet browsers and JS applications. PCs are quite ...
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0answers
18 views

Certified HP server Intel CPU versions for Ubuntu 16.04 LTS?

The web-page http://www.ubuntu.com/certification/hardware/201509-19196/ indicates that the HP Proliant DL160 Gen9 server with processor Intel(R) Xeon(R) CPU E5-2603 v4 @ 1.70GHz has been awarded the ...
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0answers
109 views

TLP not working on 16.04

I installed TLP on my laptop and set it up so that it should switch to powersave when on battery but it's not working. when I run tlp-stat -p this is the output when on AC: --- TLP 0.8 -------------...
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36 views

Xubuntu becomes very laggy after hours

When I start my laptop, there is no problems : no lag, it's not superfluid but it's OK. After few hours (~4/5 hours) Ubuntu and Gnome suddenly become very very slow : 3 or 4 seconds of delay when I ...
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1answer
184 views

CPU frequency scaling stuck 2.80 Ghz and it's not going down

I'm using Ubuntu 16.04 LTS with gnome desktop. I set the governor to "ondemand", but the CPU still runs at top frequency. I tried many things, but it's stuck at 2.80 Ghz for hours. "scaling_max_freq" ...
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1answer
95 views

Why isn't Nvidia handling all graphics smoothly?

First post, but I've been lurking here for a while. I have been using Linux since Red Hat 7, I've recently upgraded to Ubuntu 16.04. It is my first Linux where the GPU is actually properly supported....
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20 views

Ubuntu Touch number of CPU cores

I have the Meizu PRO 5 Ubuntu edition and it seems it is using 4 cores. (top, cpuinfo) This phablet is running on Samsung Exynos 7420 64-bit 14nm octa-core (A57+A53) CPU, so where are the missing ...
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30 views

Wrong number of cpus in system monitor

I am running Ubuntu 16.04. I have two Intel Xeon E5-2683 V4 CPUs. Each CPU has 16 cores and 2 threads per core, but the system monitor only shows 58 processors. Why does the system monitor only show ...
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13 views

I need to set apt-build mtune directive on VPS ubuntu server

I need to set the right architecture for apt-build to work, in a VPS environment. Here's cpu-info detailed: processor : 0 vendor_id : GenuineIntel cpu family : 6 model ...
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0answers
18 views

Understanding the reason behind a freeze using system logs to file bug

My Ubuntu laptop just froze a few minutes ago (like it is frequently doing) making me reboot it using the hardware forced way. I would like to know the cause behind it so that if necessary I can file ...
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0answers
107 views

After Upgrade from Xubuntu 15.10 to Xubuntu 16.04 Acer Nitro VN7-792G Cpu running to hot

I recently upgraded to xubuntu 16.04 and have noticed the CPU temperature reaching between 55-85 C although the CPU load is the same as before I upgraded. This is about 10-15 C higher than before the ...
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1answer
123 views

Ubuntu Backups consume 100% of cpu

I'm using the Ubuntu pre-installed Backups software, with Ubuntu 16.04 for Desktop (but perhaps the same issue was on older Ubuntu also). Each time it starts (once a day) it consumes 100% of cpu ...
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2answers
1k views

Ubuntu 14.04 or 16.04 LTS?

I just got a new laptop that has an Intel Celeron Quad-Core processor of 1.83 GHz. On the Ubuntu 16.04 LTS website, they say the recommended minimum processor requirements are of 2.5 GHz. Are they ...
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1answer
295 views

Fan noise, too hot, lagging, Ubuntu 16.04 on laptop hp pavillion g6

The CPU is overused near at 100% with no reason and I've read that maybe is a graphics problem so below i have my specs if anybody could help. Laptop specs: hp g6 pavillion cpu intel core i3-3110 2....
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2answers
45 views

How to show size Ram and CPU ussage in Ubuntu?

I am newbie in use Ubuntu so I don't know how to show Ram and CPU usage which is the same in Task Manager on Windows. It can show by command line in Ubuntu or Application to see more.
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1answer
365 views

Ubuntu 16.04 slow [closed]

I've recently made the switch from Windows 10 to Ubuntu 16.04 (64bit), but I've begun noticing that a lot of things are running a lot slower. A few examples: Fast-forwarding video files (using VLC) ...
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1answer
33 views

Video card like frying pan (heating)

I've installed the new Ubuntu 16.04 LTS (Unity) and sensors. This is what the sensors command gave me: acpitz-virtual-0 Adapter: Virtual device temp1: +64.0°C (crit = +89.0°C) temp2: +...
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16 views

assign multiple cpu to process in linux

How do I assign multiple CPU to a single process in Linux. I want to assign at least four. I have already tried htop to see which CPU are used and it says any from 0-11. I want four dedicated CPU.
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203 views

how to setup cpupower at boot time in Ubuntu 16.04?

Ubuntu users! I have a Intel computer running basically as a HTPC machine for years 24/7 and at a certain point in time the Linux kernel started to use the intel_pstate driver for my i7 Ivy Bridge (I ...
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4answers
92 views

Best desktop enviroment for old PC [duplicate]

I don't know if this is the right place to ask this question, there may also be duplicates, I just want to ask: Which will be the best DE for: Pentium 4 3.6 GHz (2007), 1GB DDR2 RAM, Intel 915G ...
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3answers
837 views

High CPU Temperature after switch to Ubuntu 16.04

The idle CPU Temp of my Intel i5-3210M CPU was ~40°C on Ubuntu 14.04. Now, after upgrading to Ubuntu 16.04 (complete reinstall) it idles at ~52°C. Battery lifetime is also noticeably lower. What can ...
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1answer
52 views

Temperature sensors broken?

I just followed this guide to install lm-sensors on my machine but the output I get is kind of weird: asus-isa-0000 Adapter: ISA adapter cpu_fan: 0 RPM radeon-pci-0008 Adapter: PCI adapter ...
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1answer
51 views

How do you hotplug enable new CPU and RAM in a Virtual Machine

I am running Ubuntu in a virtual machine and I'd like to add CPU and RAM without rebooting the device. How can I hotplug this new virtual hardware?
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1answer
180 views

Can't disable turbo boost since Ubuntu 16.04

I've recently updated to Ubuntu latest LTS. My computer suffers from bad cooling management, and I need to be able to disable turbo boost in order to use it comfortably. I had a script that was doing ...
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1answer
36 views

How to run a job in several machines that have Ubuntu as operating system

I need to run a job in several virtual machines exists in a specific cloud and I have the IP address for all of them and I configured the hostname for all of them. How to run a command in a network of ...
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0answers
29 views

Have: HP ENVY Desktop - 750-167c - Updated to Ubuntu 16.4, Need HW support

Have: HP ENVY Desktop - 750-167c Updated to Ubuntu 16.4 Need HW support! I keep getting an "HP update drivers" box when I boot the system. I click "OK" and nothing happens other than the next time I ...
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1answer
632 views

KswapD0 use 100% CPU

After upgrde from 15.10 to 16.04, I noticed my netbook fan was constantly turning at full throtle. I checked the process mnitoor and noticed KswapD0 used 100% of one core. What is the problem ? ...
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2answers
2k views

Does Ubuntu 16.04 support intel 64 bit processers [duplicate]

I am using Ubuntu 14.04 32-bit LTS for a while and I'd love to try Ubuntu 16.04 64-bit LTS. In Ubuntu download page I found 64-bit ISO image as ubuntu-16.04-desktop-amd64.iso, I am bit confused ...
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1answer
78 views

Installing gfortran and mpich for a new Ubuntu user

I am a long-term Mac user who is considering switching to Ubuntu. I am not a system guru. I program in fortran and mpi for cfd applications on high-performance computers. I am considering ...
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1answer
133 views

Does Ubuntu already support Intel Speed Shift?

Does Ubuntu already support Intel Speed Shift? If not, when will it support Intel Speed Shift? I'm looking forward to use it with my new Skylake Mobile CPU.
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0answers
47 views

kworker CPU hog - waking up from suspend

I have the (apparently very common) problem of 'kworker' hogging CPU usage. As mentioned here, the solution for many is identifying the problematic 'gpe'. This solution seems to apply to my situation, ...
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28 views

indicator-cpufreq frequency lost after suspension/hibernation

As the title, I'm using indicator-cpufreq to set the frequency of the CPU. It's really useful when you are on battery and you want to save some power. However, when I wake the laptop after a ...