Questions tagged [intel-cpu]

Questions about CPUs built by Intel.

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How to update possible C States

I've been running ubuntu 20.04.4 LTS on an old motherboard with intel i5 3570k. This CPU has a limitted number of C States available and as such power consumption was mediocre. I have now updated to a ...
1 vote
1 answer
38 views

i3-6100 CPU stays at low frequency during load

About a month or two ago, my Ubuntu 22.04 system's performance took a sudden hit out of nowhere. I didn't changed any HW, I didn't messed with any configurations. After investigating a bit, I've found ...
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2 votes
1 answer
557 views

intel_pstate CPU model not supported

I've recently updated to Ubuntu 22.04 LTS and saw there was power options. However, performance mode is not available. I can't get the same performance and benchmark scores I get in Windows dual boot. ...
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1 vote
0 answers
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Installation of Ubuntu 20.04LTS and 22.04LTS fails on my MSI Creator Z16 A12UET core i7 12th gen

I have tried severally to install ubuntu desktop on my MSI pc (model stated above) but it always fails run after. The installation completes without error but it always fails to work that is, boot to ...
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0 answers
15 views

ubuntu 20: <Error> CPU pipe A F10 underrun

I get the error an error: **** CPU pipe A FIFO underun when I open my Laptop Lid after it was closed. Sometimes also after disconnecting a monitor. Then I cannot continue to use my laptop. I ...
0 votes
0 answers
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cpu usage high when playing games

So I just changed to Ubuntu from Windows 10 and I installed some games like Hoi4. So I boot up the game and the CPU usage is at 99 percent and my game is lagging so much it's unplayable. On Windows, I ...
0 votes
1 answer
503 views

Maximum CPU frequency reported wrong by lscpu, CPU not boosting to actual maximum frequency

I'm using Ubuntu 20.04, and my CPU model is the Intel i7-10750H: > lscpu Model name: Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz Stepping: 2 Frequency ...
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0 votes
1 answer
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modprobe intel_rapl_common: no such device on Intel Core 11th-i7 dual-boot system

I am using a Dual-boot laptop (Windows10 and Ubuntu18.04 LTS), and I am trying to using the Intel RAPL interface for power measurement in Ubuntu. When I want to use sudo modprobe intel_rapl_common to ...
5 votes
1 answer
4k views

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.
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0 answers
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Ubuntu doesn't recognize virtual cores

I have a little problem... The virtualization is activated in the Bios an it is also detected by lscpu (Virtualization: VT-x) but Threads per Core is only one an also htop only shows me half of the ...
0 votes
1 answer
52 views

can not find cpu threads in system monitor?

I run ubuntu 21.10 and have a 4 core processor with 4 threads, but I only get 4 cores:
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0 answers
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Set CPU frequency permanently [duplicate]

Just got a laptop with an Intel Celeron N4500 (Dual Core @ Max. 2,800) which runs out of the box on 1,100. This is not even enough to run Netflix on full screen that's I'd like to increase the ...
1 vote
2 answers
607 views

How to troubleshoot CPU HW crash in Ubuntu 18.04

I bought a new computer a few months ago. I installed Ubuntu 18.04 and it's working fine except when I compile c++ code: it freezes hard as soon as there is a spike of high CPU usage (10+ cores). The ...
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What is happening with the power mode in ubuntu 21.04? Very laggy balanced mode

EDIT: The actual question: Have you or anyone else had issues with performance degredation using this power mode on a fresh install of ubuntu 21.04. I am trying to get to the bottom of why this ...
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8 votes
3 answers
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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 ...
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1 answer
399 views

High CPU usage 20.04

Need to troubleshot this high CPU performance. Linux alaa-XPS13-9333 5.8.0-50-generic #56~20.04.1-Ubuntu SMP Mon Apr 12 21:46:35 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
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1 answer
557 views

How do I set up Dell Precision 3560? [closed]

How do I configure and optimize Ubuntu on Dell Precision 3560? The machine is certified for Ubuntu I'm a devops engineer, and I use the machine also for my home studio to record music. I need Wifi, ...
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1 vote
1 answer
2k views

Powercap (intel-rapl) - Changing long-term power limit

I'm looking for some clarification on how to use either rapl-set or powercap-set to change the long term power limit on my Intel N4200 laptop running Ubuntu 20.04. Firstly, I know that my bios allows ...
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0 votes
1 answer
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Segmentation fault / fail to boot after CPU upgrade?

My machine is a HP ProDesk 400 G4 SFF running Ubuntu Server 20.04. It was running just fine with the original Intel i5-6500 CPU, but upon upgrading to an i7-6700 the system will no longer boot. I've ...
1 vote
1 answer
2k views

How to confirm if undervolt is working in Ubuntu?

I have managed to under-volt my Intel 8750H by 150 mV using https://github.com/kitsunyan/intel-undervolt. But I am not sure if the settings are really applied.
1 vote
0 answers
7k views

intel sgx enabled in bios but in ubuntu system the isgx driver keeps saying "cpu does not support SGX1 instructions"

I have a gigabyte b365m motherboard with the newest bios F3a and core i5-9600k. I have set intel sgx to "enabled" in bios but in ubuntu the isgx driver keep saying intel_sgx: CPU does not support SGX1 ...
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3 votes
1 answer
5k views

Set Max TDP of Intel H-series CPU

I am searching for some program which deals with setting the max TDP of the CPU like we do in Intel XTU on Windows. I am able to undervolt the CPU with this project. I can also monitor the TDP of the ...
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4 votes
0 answers
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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 ...
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32 votes
3 answers
10k views

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%. ...
0 votes
1 answer
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Strange Processor Behavior

So now my processor boots locked at 800mhz every boot, and every wake-from-sleep. This occurs in both Windows and Linux. For Windows, I throttlestop and check/uncheck BD prochot and thermal prochot ...
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12 votes
2 answers
3k views

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?
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7 votes
4 answers
6k views

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 ...
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1 vote
0 answers
494 views

Undervolting on Ubuntu

I decided to undervolt my cpu and I saw online there are 2 main programs to do it on Windows: XTU and ThrottleStop. However it seems there aren't versions of these programs for Ubuntu or for Linux in ...
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5 votes
5 answers
2k views

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 ...
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5 votes
0 answers
4k views

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 ...
0 votes
2 answers
795 views

How can I install Ubuntu on a 2007 Macbook Pro?

I have a 2007 Macbook Pro that is running 10.6.8. I'm actually using it now to ask this question. I also have an iMac running 10.13.6. I can't use my laptop because of its age and because I cannot ...
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1 vote
1 answer
1k views

Ubuntu 18.04 LTS Spectre/Meltdown Status [duplicate]

I could not find any official Ubuntu information on that issue. If I check the official statement: https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/SpectreAndMeltdown there is only information on ...
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0 votes
1 answer
929 views

How do I tell if CPU Turbo is on or not on 16.04?

I'm using a command that has been recommended to me many times and all it turns up is this: user@tux:~$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver acpi-cpufreq acpi-cpufreq acpi-cpufreq ...
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0 votes
0 answers
151 views

Ubuntu 18.04 Intel i5 4-Cores peaking one at a time

I'm having an issue with different programs making my quad-core i5 peak. Not sure exactly what to do. Any help is appreciated. Update: I was able to break it down to the “gedit” program. It drives my ...
0 votes
2 answers
4k views

Distribute workload among different CPUs

On my Ubuntu 16.04, I am running a program that is relatively expensive in terms of CPU usage. It takes quite much time to finish, and other tasks (like browsing the web) get slower as a consequence. ...
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1 vote
1 answer
2k views

CPU core stuck at 100% utilization

I noticed that my laptop's fans were running continuously at high RPM for a few hours. I installed HTOP to check CPU utilization, and found that one of the 8 cores is stuck at 100%. Even after ...
3 votes
1 answer
878 views

Ubuntu 18.04 Install Freezes the CPU

I'm trying to install Ubuntu 18.04 on a Dell XPS9560 with an Intel Core i7-7700HQ and It was freezing up on the splash screen. I started it again and disabled the splash screen in the GRUB command ...
0 votes
0 answers
61 views

CPUs not working at 100%

I recently upgraded my system to a i58400, 16 gb ddr4 and as os jumped from 16.04 to 18.04.1. Now im compiling Unreal Engine for Linux, so its supposed to be a heavy calculation and take many hours. ...
1 vote
1 answer
1k views

CPU temperatures 90+ degrees Celsius on 2.5GHz and above

I noticed with the help of psensors that my CPU overheats to 90-97 degrees celcius if it gets above 2.5GHz. I am using a Lenovo Y720 laptop. I tested this both in games and by CPU stress test. I found ...
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2 votes
1 answer
108 views

What should I need to do after a CPU/IGP change in Ubuntu 18.04?

On the next week I'd like to change my cpu from an Intel G3930 to G4600. What should I need to do and why? Can I change without reinstall anything? Linux can handle this automatic? Do I need for ...
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2 votes
0 answers
965 views

High CPU Usage - No command

I've had an issue over the last few days with high CPU usage. It's at a very constant ~60%. I have tried using htop to identify the culprit, but unfortunately the command section is blank (as below) ...
25 votes
4 answers
17k views

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: ...
4 votes
2 answers
7k views

Install OpenCL on ubuntu 16.04, Intel i5 7th gen Dell Inspiron Laptop

I recently purchased a Dell Inspiron 3000 series laptop with an Intel i5 7th generation processor. The machine came preloaded with Windows 8 but being an Ubuntu loyalist, I installed Ubuntu 16.04 on ...
0 votes
0 answers
72 views

my laptop overall performance is slower than windows

hi all is my amd driver really working ? cause my laptop is really slow ! i don't know the exact reason for the slowness i thought it maybe the gpu driver but i've checked and found this . so if it's ...
3 votes
0 answers
200 views

Third party graphics drivers on ubuntu 16.04 causing boot loop [duplicate]

About a week ago, I installed various system updates, including a package called intel-microcode. After rebooting, I discovered that I was unable to get past the login screen (i.e. I would login and ...
4 votes
0 answers
1k views

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), ...
0 votes
1 answer
91 views

Intel Bug: Much Ado About Nothing? [duplicate]

If I understand correctly, the bug allows to read in another process's virtual address space. To exploit this, the adversary needs to have a legal account on your personal computer, which is not ...
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1 vote
1 answer
2k views

Ubuntu freezes on intel atom

I have a laptop with an intel atom x5-z8350, and it keeps on randomly freezing. I already disabled the cstate and turbo, but it still freezes. Any other fixes I can try?
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0 votes
0 answers
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What tweaks can be used to make Ubuntu run faster on a weak CPU?

Most tweaks pertain to low RAM systems or to making the system use the HDD less. In my system with a SSD and 8GB of RAM, the CPU (or SoC in the case of my Intel Celeron N3150) is the bottleneck. I ...
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1 vote
0 answers
689 views

Artifacts in Ubuntu GNOME 17.04

I use Ubuntu 17.04 with GNOME DE and sometimes there are strange artifacts when i resize file explorer window - it turns into colored lines on black background for a moment (can't take a screenshot ...