Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Ubuntu 12.04 on my laptop uses more than 50 percents of each core even if nothing is running. I have checked from system monitor and from htop, both of them show that each of 4 CPUs percentage is above 50 percents. I have run sensors to check the temperature these are results when only firefox is running:

acpitz-virtual-0 Adapter: Virtual device temp1: +80.0°C (crit = +108.0°C)

asus-isa-0000 Adapter: ISA adapter temp1: +80.0°C

coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +82.0°C (high = +86.0°C, crit = +100.0°C) Core 0: +82.0°C (high = +86.0°C, crit = +100.0°C) Core 1: +74.0°C (high = +86.0°C, crit = +100.0°C)

What can be problem?

EDIT: My Laptop: ASUS U36SD RX167V Intel Core i7-2620M 8GB RAM Nvidia Geforce GT520M

Bumblebee did not help

share|improve this question
Post your specs in the question. – VedVals Nov 29 '12 at 2:57

The problem might be your graphics card consuming more power. I had a similar problem and I installed Bumblebee. Now I get approx. 2 hrs. of battery life and 65°C temp.(on prolonged use).

Bumblebee's site

Also take a look at this : How do I enable/disable graphics card at will without logging out?

share|improve this answer

there are three links that saved me (all together!) :)

for graphic card problems (i had an ATI Radeon):

as a power management utility: installed jupiter with the following terminal commands:

sudo add-apt-repository ppa:webupd8team/jupiter
sudo apt-get update
sudo apt-get install jupiter

for updates:

these info all together made my laptop go back to normal temperatures.

share|improve this answer
the repository of jupiter not right. it provide error by add-apt-repository?! Any other links or repositories? – shgnInc Dec 11 '13 at 6:49

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

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