Questions tagged [cpu]
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 X571 notebook shutting down because critical temperature is reached (99°C)
It has happened several times that my notebook suddenly switches off due to the CPU reaching critical temperature, as can be seen in the log. Strange, however, that the CPU fan is not already running ...
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wifi connection problem in Ubuntu 21.04
Trying to solve a wifi problem. Wifi cuts out every few minutes. Also seems to pause when working. (Separately, but perhaps related, Ubuntu freezes when using wifi.)
In running "top" I saw ...
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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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Ubuntu 20.04.3 LTS Significant Throttling of Intel i7 Processor
I would really like to find out why my cpu's keep reverting back to a cpu powersave mode after I get a kernel update then reboot.
I cleaned my laptops vent but this seems to happen whenever a new ...
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Ubuntu works so slow no matter what I try
So I have installed ubuntu 20LTS for a computer that was assigned to me but it is a painful to use it because it boots in 10 minutes. But that is not it, it is really slow, opening a tab from firefox ...
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How to set CPU affinity for process with specific name to very high every time that process starts?
How do I set CPU affinity for process with specific name to very high every time that process starts?
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How to limit CPU utilization for a process in ubuntu vm
I am using ubuntu 20.04 VM for a course. For an assignment, I need to run a command that creates some thread and two processes happen simultaneously. However as soon I run the command ubuntu slows ...
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Ubuntu 20.04 slow after unattended-upgrade and reboot
I am seeing significantly worse performance after rebooting. This is noticeable across the entire machine (using apps, browser, terminal, etc.), but I am going to use this particular compilation since ...
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Ubuntu 20.04 desktop horrible video and mouse on Firefox
I have an old reliable workstation that was 16.04 until a couple weeks ago. I upgraded to 18.04 and then after a few days to 20.04. On both 18 and 20, video in Firefox is horrible, like 1.5 frames ...
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My Ubuntu 20.04 only uses Single Core [closed]
Now I am using Ubuntu 20.04 but when I use some GUI applications(rviz, VSCode, Firefox) and playing bagfiles(logging data of ROS), it becomes really slow.
When I check with lscpu command, it shows as ...
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Pulseaudio cpu usage above normal with no audio/video play
I've noticed on my default installation of Ubuntu 21.04 with kernel 5.11 on the Dell XPS 9510, that Pulseaudio uses a small amount of CPU all the time, around 6-7% (checked with the top command at CLI)...
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CPU running hotter at idle when using grub boot parameters
So, my laptop has been "freeze crashing" randomly (System totally unresponsive, mouse freezed, clock not going forward, no keyboard commands have any effect, and the only way to get out of ...
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ALL CPU's stuck at 800Mhz ubuntu 20.04.3
Cpu's all stuck at 800Mhz
I type in watch -n1 "cat /proc/cpuinfo | grep MHz" (to see cpu's)
No matter what I do, I launch a large program and render an animation in Blender or use Octave to ...
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cpufreq: cpu frequency going down to minimum just when I need extra power
I've spent almost 3 days around this problem, to no avail.
I felt the laptop was running slow on certain tasks, slower than usual so I downloaded cpufreq extension to try and monitor and maybe ...
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Huge CPU load under large amount of TCP connections
Under a large amount of TCP connections, one CPU core will always go up to 100%. After that happens, the whole VM would start lagging and there will be an evident packet loss.
Is there a way to solve ...
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High cpu usage in sleep mode
CPU history in sleep mode
when I put my laptop (dell inspiron 5401) into sleep mode, as you can see the cpu activity in a few minutes of sleep mode, and fan is turning in full speed.
This problem ...
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How to free system of useless processes in a safe way?
I am kinda new to Ubuntu. For the past 4 months, I have been setting up various development environments for various purposes, the worst thing I did was just googling how to install this or do this ...
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Understanding the Htop output
I am a recent user of Ubuntu. I am running some simulations in my Ubuntu 20.04 which don't run successfully. When I look at the usage, I see numbers like these.
Does this mean that my machine is ...
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Can I swap my hard drive from an intel/Nvidia system to an amd/radeon system?
I am getting a new pc soon. My current rig is using a GTX 760 and Intel cpu. The new computer will be using an AMD cpu with a Radeon RX 6700 XT.
Will I have any issues swapping the hard drive over and ...
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CPU package power consumption is connected to nVidia GPU P-states which caused CPU to throttle during load
CPU: 7700HQ
GPU: GTX 1050
I used Prime95 to stress the CPU (using AVX2). It stabilized at 3.0GHz@45W after few minutes. It was expected result so nothing new here.
After that I installed nVidia driver ...
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CPU frequencies wrong
So after I installed Ubuntu to my laptop, I was amazed at how quiet the laptop became. Previously on Windows the fans constantly ran at full speed. However, when I started gaming on it, framerates ...
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Kubuntu Limited CPU power?
CPU power on softwares on Ubuntu reach 100% , while in Kubuntu it fluctuates between 60-80%
What could be the cause ? Why Kubuntu 21 limits the CPU power?
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Actual CPU Core Temperature for AMD Threadripper 2970WX
When we get the CPU temperatures for an AMD Threadripper 2970WX in Ubuntu 20.04, does the reported temperatures account for the 27 degree celcius offset?
Snippet of a sensors output:
k10temp-pci-00c3
...
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Ubuntu LTS or 21.04 for an AMD Ryzen 5?
I just bought a new laptop which has an AMD Ryzen 5 and I plan to give it Ubuntu. I'm more of a LTS guy, but I read on some blog that the new Linux kernel 5.11, which is boarded on Ubuntu 21.04, gives ...
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Differences between acpi thermal zone and lm-sensors on the cpu temperature
I'd like to monitor the CPU temperature, but I found that both paths contain cpu temp info, x86_pkg_temp under /sys/class/thermal/thermal_zone2/temp and cores' temp under /sys/class/hwmon/hwmon1/temp*...
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Override BIOS limitation on CPU frequency
Similar to previous questions (example 1, example 2), the BIOS is limiting my CPU frequency because of a bad connection with the center pin of the adapter on my Dell Precision M5520 (which leads to ...
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Install Prime95/Mprime on Ubuntu 20.04
How do we install Mprime or Prime95 on Ubuntu 20.04 using apt? Or must it be installed from a .deb/tar.gz file?
I am planning to stress test my Threadripper CPU using this application.
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What causes "soft lockup" errors and how can I fix it?
I've been seeing sporadic messages of the form "BUG: soft lockup - CPU#0 stuck for 22s!" from the System Notifier for several months -- I've had at least three or four kernel version updates ...
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How to lower the critical temperature of the CPU, so thermal throttling starts earlier
I have an old Laptop with a broken heat sink, which leads the CPU to heat up to 80°C during small workloads, and briefly reaches 100°C during higher workloads (e.g. during system updates and compiling ...
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cpufreq scaling governors "ondemand" and "conservative" won't ignore nice load on AMD Ryzen CPUs
My kernel 5.11.0-22-generic automatically loads the cpufreq scaling driver acpi-cpufreq and the scaling governor schedutil for my Ryzen 9 5900X. I enabled the setting ignore_nice_load after changing ...
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Permanently disable Intel Turbo Boost in Ubuntu 18.04
I would like to permanently disable Intel Turbo Boost on my Ubuntu 18.04 due to my PC processor reaching around 70°C. I managed to turn it off by executing below command
echo "1" | sudo tee /...
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Steam Extreme CPU Usage While Downloading Games
I've recently fresh installed Ubuntu on my laptop (specs below, but more than enough to work with) and started downloading one game on Steam, but suddenly I start feeling my computer a lot slower than ...
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Why does the processor get hot?
Good afternoon, I have Ubuntu 20.04 operating system installed. My laptop(Lenovo b590) is equipped with Intel i3 3110M, RAM 12Gb, SSD 256, HDD 512, Intel HD 4000 and Nvidia GT720. I can't understand ...
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Ubuntu 20.04 crashes: An ECC error or L2 poison was detected
Ubuntu 20.04 crashes randomly at different times. Unable to point to a specific event.
uname -a
Linux ubuntu 5.11.0-051100-generic #202102142330
SMP Sun Feb 14 23:33:21 UTC 2021 x86_64 x86_64 x86_64 ...
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CPU fan works very fast
since I upgraded to 21.04, I realized the CPU fan is working with more sound and speed, even when I'm in online classes or watching a YouTube video or just I'm in Firefox.
I didn't have this problem ...
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changes to scaling_max_freq don't persist after edits
So I'm trying to pump up my CPU's performance by editing scaling_max_freq in /sys/devices/system/cpu/cpu0/cpufreq but for some odd reason, my changes don't actually go into effect.
Instead, this ...
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Why ubuntu cannot use my second CPU core?
I made the same question a time ago and nobody answered me so maybe now someone can help me.
The thing is that since i have ubuntu in this pc i've NEVER seen the second core of the CPU being used, ...
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Webcam diagnostics? Video calls routinely performing a 100% cpu spike when using webcam [Ubuntu 20.04, Asus Zenbook UX330UAK
I've posted about this before I feel like I've narrowed down that this is a webcam issue.
Important note! The CPU only goes to 100% for a few seconds and then returns to 50-60%. That is the new ...
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Why does the VLC player has lag after pause?
why when I pause the vlc player and then start it after a few seconds, part of the movie doesn't play and jumps forward, while on Windows This problem did not occur.
My system specifications:
CPU: ...
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Ubuntu 20.04 - High GPU / CPU / FAN usage on Haswell-ULT
I'm facing an issue and I can't figure out what to do.
When using the laptop in a minimal-normal way (chorme + slack) CPU rises a lot. Chorme seems to be the one consuming the most. Task Manager in ...
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Programs output CPU and RAM usage in plots (if possible)
I want to know how much of RAM my pipeline consumed for each step. However, the program need hour to completed and I cannot stay in my computer for tracking the usage on thousands of files. I found no ...
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CPU usage too high on Ubuntu 20.10
It's been some days since everything got slowed down on my Dell Latitude 5480. I have 16GB RAM, rarely its usage goes beyond 40%, but applications that normally don't use that much CPU now they go up ...
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Ubuntu 20.04 slows down after usage
I have a DELL laptop with Ubuntu 20.04.
It's been a while that after some usage (e.g. firefox, some video-calls, etc.) it becomes slow. There are some processes which start to take higher percentage ...
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Ubuntu 21.04 - high CPU spikes when a mouse is moved
I have the following issue with CPU on Ubuntu 21.04.
It was not the case for me on version 20.10 and previous ones.
When the mouse is moved frequently on my PC I have huge CPU spikes. temp is above 60 ...
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Ubuntu 20.04 shuts down suddenly
My Ubuntu 20.04 shuts down suddenly, without particular stress on the machine (just while surfing the internet).
From cat /var/log/kern.log | grep 'Error' around the last shutdown time:
May 23 10:07:...
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Why ubuntu doesn't use the second CPU croe
Ubuntu doesn't use the second core of my CPU, ubuntu can recognize it but even when the first core is really busy (+90%) the second one keeps in 0,0% of use.
Why is that?
This PC came with ubuntu 16....
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Parallel processing isn't working with multi cores in ubuntu 20.04
My laptop has 4 cores.
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
Address sizes: 39 bits ...
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CPU frquency scaling broken on upgrade from Ubuntu 20.10->21.04 (Intel CPU)
This is basically a followup to CPU frquency scaling broken on upgrade from Ubuntu 20.04->20.10 (Intel CPU)
However, I'm not allowed to comment, and it was suggested to write a new question instead....
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gnome-shell growing use of CPU on 20.04
My computer worked well until a few month ago. I began to notice some lagging and even freezing/lock. I checked with "top" and "htop" and notice a enormous use of CPU by the gnome-...
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Ubuntu 20 server htop shows 100% CPU usage, why?
The title says it all, and I also asked the same question here: https://stackoverflow.com/questions/67464225/digitalocean-server-cpu-100-without-app-running
Not sure which is the right place to ask ...
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