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
Best Answer
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?