5

With :

Ubuntu Release 12.04 (precise) 64-bit
Kernel Linux 3.2.0-29-generic
Intel® Core™ i7-3635QM CPU @ 2.40GHz × 8

The first CPU is always at ~70%-100% with nothing big running and it is making the fan noisy. I am wondering if it is normal and if not, how can I fix this? enter image description here Thanks.

  • 1
    Click on Processes tab, then View > All Processes, and click on "% CPU", what are the top processes? – taneli May 1 '13 at 18:28
  • 1
    gnome-system-monitor; firefox; at-spi-bus-launcher; etc They all show 0 % CPU. – Artyom2033 May 1 '13 at 18:40
  • Hmm, sorry, there is kworker/0:3 in top of all. It use 72%CPU. – Artyom2033 May 1 '13 at 19:00
  • check what is running using the top command – GM-Script-Writer-62850 May 1 '13 at 19:22
  • Urgh, that is a bit complicated to figure out ... This sister site question has a relevant answer: unix.stackexchange.com/questions/22851/… to figure out the exact culprit, but the short of it is that there's likely a misbehaving driver or hardware. Unless the system is supposed to be doing something heavy. – taneli May 1 '13 at 19:51
4

I have done the things described in this post : Why does kworker cpu usage get so high? and it worked for me.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.