ubuntu-x-swat team mailing list archive

[Gorka Navarrete <gorkang@xxxxxxxxx>]

Public bug reported:

Some of the new Macbooks Pro (I think the 5,x series) are equipped with
"dual GPU's", Nvidia 9400 and 9600, the first for low-power
consumption/long battery, the second for high performance.

In Lucid the default graphic card used is the 9600 and there is not an
obvious or easy way to switch to the Nvidia 9400 (in MacOs you can do
that in the Energy Saver preferences menu).

The problems associated to the forced use of the Nvidia 9600 are:

*Lower battery life (<3h with Ubuntu compared to 7 hours with MacOs)
*High temperatures (with Ubuntu, the computer is always a lot hotter)

The battery life problem is a deal breaker when you are on the move.

I expect to be able to select which GPU to use (Nvidia 9400 or 9600).

** Affects: nvidia-graphics-drivers (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apple battery energy nvidia

** Description changed:

  Some of the new Macbooks Pro (I think the 5,x series) are equipped with
  "dual GPU's", Nvidia 9400 and 9600, the first for low-power
- consumption/log battery, the second for high performance.
+ consumption/long battery, the second for high performance.
  
  In Lucid the default graphic card used is the 9600 and there is not an
  obvious or easy way to switch to the Nvidia 9400 (in MacOs you can do
  that in the Energy Saver preferences menu).
  
  The problems associated to the forced use of the Nvidia 9600 are:
  
  *Lower battery life (<3h with Ubuntu compared to 7 hours with MacOs)
  *High temperatures (with Ubuntu, the computer is always a lot hotter)
  
  The battery life problem is a deal breaker when you are on the move.
  
  I expect to be able to select which GPU to use (Nvidia 9400 or 9600).

** Package changed: ubuntu => nvidia-graphics-drivers (Ubuntu)

-- 
Problems related to not being able to use Nvidia 9400 in Macbook Pro
https://bugs.launchpad.net/bugs/592086
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