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[Juan Rada-Vilela <1451117@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Trying or installing ubuntu 15.04 on MacbookPro 11,2 maintains the first
core (out of eight cores)  at over 80% its usage even when there are no
running applications. This constant CPU usage contributes to heating my
laptop.

To reproduce, try or install Ubuntu 15.04 on MacbookPro 11,2, and either
open the System Monitor application or run `top` from Terminal.

I will examine if this issue also affects my office desktop computer.

** Affects: ubuntu
     Importance: Undecided
         Status: New

** Attachment added: "Screenshot from 2015-05-03 12:58:59.png"
   https://bugs.launchpad.net/bugs/1451117/+attachment/4389782/+files/Screenshot%20from%202015-05-03%2012%3A58%3A59.png

** Package changed: xserver-xorg-input-synaptics (Ubuntu) => ubuntu

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https://bugs.launchpad.net/bugs/1451117

Title:
  ubuntu 15.04 CPU has one core constantly over 80% usage

Status in Ubuntu:
  New

Bug description:
  Trying or installing ubuntu 15.04 on MacbookPro 11,2 maintains the
  first core (out of eight cores)  at over 80% its usage even when there
  are no running applications. This constant CPU usage contributes to
  heating my laptop.

  To reproduce, try or install Ubuntu 15.04 on MacbookPro 11,2, and
  either open the System Monitor application or run `top` from Terminal.

  I will examine if this issue also affects my office desktop computer.

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