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Questions tagged [intel-cpu]

Questions specifically pertaining to CPUs built by Intel. Do not use this tag purely because your system happens to have an Intel CPU in it.

81 questions
32
votes
3 answers

Why is Kubuntu using much more CPU than Windows in YouTube and other web browsing use?

I am just moving to Kubuntu from Windows. And i feel that browsers on Kubuntu cost so much CPU to work. Example: When I watch Youtube: In windows, CPU is around 12%. In Kubuntu, CPU is around 50%. Same result w/18.04 & 19.10, plus Ubuntu…
Thuat Nguyen
  • 441
25
votes
4 answers

Set CPU temperature throttle threshold on Ubuntu/Thinkpad

I receive following error messages a couple of times per hour: 08.03.18 21:27 kernel CPU0: Core temperature above threshold, cpu clock throttled (total events = 2234) 08.03.18 21:27 kernel CPU2: Core temperature above threshold, cpu clock…
Christopher Will
  • 401
19
votes
3 answers

How to disable tracker on ubuntu 20.04?

I purchased a new acer i7-1165G7 @ 2.80GHz × 8 laptop installed ubuntu 20.04 along with dual boot Windows. Whenever I start the laptop either in windows or ubuntu both are making very loud noise. I suspected fan was faulty so I gave it to replace…
user3704712
  • 291
12
votes
2 answers

Show Lenovo Yoga 730 fan speed in Kubuntu

On my Lenovo Yoga 730-15IWL with a i5-8265U CPU, the sensors-detect command cannot detect the fans, so sensors cannot show them either. How can I show the fans speed on such a system?
rubo77
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11
votes
5 answers

Do the latest Intel Core i3/i5/i7 processors just work?

I am thinking of buying a new laptop, and need Ubuntu as my OS. Is it true that the latest Intel i3, i5, i7 CPUs work properly immediately after install, or do I need to install some additional software/drivers for them to work? I'm just curious if…
Beni Bogosel
  • 1,207
7
votes
4 answers

CPU overheating in Ubuntu 18.04

As I was checking the kernel logs I noticed : kernel: CPU2: Package temperature above threshold, cpu clock throttled (total events = 13430). I have 4 CPUs and all of them have the same issue. My laptop hardware info : K46CB (ASUS-NotebookSKU) CPU…
Navid
  • 71
6
votes
5 answers

Processor caps at 800Mhz

When I do something that spikes the CPU, it seems to throttle the CPU to prevent overheating. This is fine. However when I stop, finish or close the program or process that is pushing the CPU, it seems though as if the throttling never lifts. My…
DannyBoy
  • 133
6
votes
0 answers

How do I setup Intel SGX on Ubuntu?

I want to use Intel SGX on Ubuntu. I have a Dell Inspiron with an Intel i7-8550U, and that CPU supports SGX. I am running Ubuntu 18.04 from a bootable flash drive (my main OS is Windows 10, typically I use a VM for my Linux dev, but a VM seems…
danxinnoble
  • 169
5
votes
2 answers

i3 throttled at 500Mhz when battery under 30%

I have the following problem. As soon as the battery drops below 30%, the CPU is being throttled to 500Mhz. As soon as I plug in the power adapter, it goes back to normal. The laptop is a Lenovo U41-70, I am running Ubuntu 15.10 x64, the CPU is an…
daniel
  • 71
5
votes
1 answer

Laptop battery life

I have Asus TransformerBook TP500LB. Very good laptop - i5 5200U, 8GB RAM, nV 940M, ... But, when I run windows10, my battery life is somewhere about 6-7hours (very low brightness and no gaming as well). In task manager I can see, that CPU frequency…
kubrdom
  • 73
5
votes
1 answer

Is it possible to install intel-mkl on Ubuntu 18.04 LTS?

I know that this package is available via official repository only from Ubuntu 20.04 LTS and in newer versions.
N0rbert
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4
votes
0 answers

CPU doesn't use TurboBoost in Ubuntu 17.10

I have Lenovo Ideapad 720s 14 with an Intel i7-8850U CPU, using Ubuntu 17.10 with kernel 4.13.0-31-generic. I use i7z to measure clock speed. My CPU refuses to boost above 1.8GHz (its base frequency), even on single-threaded workloads with plenty of…
Morten Lohne
  • 139
4
votes
0 answers

Ubuntu 22.04.4 running very slow after update from 22.04.2

I am using ubuntu 22.04.4 and I've noticed that after upgrading to this current version that the machine runs extremely slow from 22.04.2. The base CPU clock always goes down to the minimum and causes the computer to lag. Any idea what changed that…
Will H.
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4
votes
2 answers

C-states not fuctioning on Ubuntu Server 22.04. Please help

I’m putting together a home server running Ubuntu 22.04 LTS and I’m having a hell of a time with the c-states. Current power draw of the system is 33 watts but I’d like to lower that as far as possible. At the moment I can only get a C2 c-state.…
bleptoga
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4
votes
0 answers

How to enable all the cores available in ubuntu 18.04

When I executed the command: sudo lshw | grep core It's showing following output: cores:2 cores_enabled:1 threads:2 How can I enable both cores? (Ubuntu 18.04). Edit: No options visible in BIOS output for: cat /etc/default/grub is output for sudo…
karun j
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