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[Bug 1172978] Re: Laptop becomes very slow on Battery


Aliasbody, could you please execute the following via a terminal in order for the necessary debugging information to be attached:
apport-collect 1172978

** Package changed: pm-utils (Ubuntu) => linux (Ubuntu)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Low

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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  Laptop becomes very slow on Battery

Status in linux package in Ubuntu:

Bug description:

  I have a problem which I don't find a solution for it. And it only
  happens when the charger is disconnected. The problem is the fallowing

  - When the charger is connected the OS is fast. 
  - But, when it isn't, then Ubuntu becomes impossible to use because of it slowness (taking up to 3 minutos to open an application if the mouse is not on top of another application).

  A workaround that I've found is to disable pm-powersave by doing :
  "sudo pm-powersave false". But this workaround causes 2 problems :

  1 - It need to be loaded every time I boot the laptop
  2 - If pm-powersave is set to false then the laptop won't Suspend.

  Another thing : My laptop has an nVidia GPU and I am using the Nouveau
  driver. If I boot the computer with the "nomodeset" option set in the
  kernel, then I will have a small resolution, no visual effects, but
  there will be no slow down problem

  Best Regards,
  Luis Da Costa

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