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You have both an Intel GPU and ATI Radeon right?

Your high energy consumption is likely mainly due to having both GPUs running whereas OS-X switches between them and powers-off one when not used....

10W is what I get. I still have to echo OFF to power-down discrete (NVidia) GPU.

In my case, I had to leave gfxCardStatus running while shutting-down OS-X.

Or, it takes to reboots to make it stick. Not sure which.

A few days on...

Suspend works fine (although it seems to take longer each time. gEdit also seems to be misbehaving so perhaps related)

USB device: Apple Internal Keyboard / Trackpad (Apple...

I have read your post recently, and I agree that most people will not be able to use your method.

I found your post a little hard to follow and your modified apple-gmux.c file was not commented to...

But you still need gfxcardstatus 2.2.1 in OS-X to get this to work, right?

I think you also need nouveau kernel module loaded to get vgaswitcheroo/switch.
...

Switching to Intel GPU seems to solve this problem for 3.7.5 and 3.9.0 rc7 kernel! I have not tried 3.8 kernel yet.

So, probably not a Ubuntu issue, but somehow a nouveau issue. Just guessing.

On train tonight, Battery history indicates I used 15% in 1 hour. So at this rate I would get 7 hours. My 10 month old battery seems to have 95% initial capacity. 7 times 0.15 is 95%.

UPDATE:...

I think the first ensures that the idle GPU is powered up (which is NVidia in your case) and the third powers the idle GPU off (which again is NVidia).

Since my reply, I have manage 10W using Intel GPU only.

http://ubuntuforums.org/showthread.php?t=2137538

Xorg log

[ 24.425]
X.Org X Server 1.13.3
Release Date: 2013-03-07
[ 24.425] X Protocol Version 11, Revision 0
[ 24.425] Build Operating System: Linux 3.2.0-37-generic x86_64 Ubuntu...

OK. I got 11W!!!

This page explains why I had no vgaswitcheroo:

https://help.ubuntu.com/community/HybridGraphics

I needed to load nouveau (enen though I don't want to use it.


modprobe...

Lid close put MBP to sleep and display turned off.
Lid open woke it up and screen turned on. All good.

This site was helpful http://www.backtrack-linux.org/forums/showthread.php?t=48904

But in...

I am trying to get Nvidia GPU turned off so I can reduce power consumption.

I think I am close so I'll post what I have managed to do.

I used gfxcardstatus v2.2.1 from here...

Trying raring.

On lid-close MBP does not sleep.

But I found that briefly (1 second or less) touching magnetic lid switch area with a magnet causes it to sleep.

Lid switch is on LHS near [fn]...

My experience suggests no.

I have a MBP 9,1 (mid 2012, non retina, 15")

Issue seems to be that nvidia driver is difficult to get working and if you use nouveau instead, power consumption is...

Ok. You have a MBP9,2. It is a little different, but WiFi should be same.

Install these packages

b43-fwcutter
linux-firmware (this should already be installed)
linux-firmware-nonfree
...

I assume you have a MBP9,1 (15", mid 2012).

I have also documented installing 12.10.

http://philatwarrimoo.blogspot.com.au/2012/10/installing-ubuntu-1210-on-macbookpro91.html

Did you install...

You seem to be describing a sensitive lid switch.

I very much doubt an accelerometer is involved - since sleeping hard drives (if you have one) have parked heads and are in no danger of hitting...

Is there a pattern? If it is your accelerometer in combination with some wake event, then this should be easy to test by simulating a bike-ride.

My old MBP (and I assume newer models) keep USB...

Another thing to try is 'native' EFI booting.

Hold down 'option' key when booting. If you get a 'windows' option, try it.

For this to work, if I understand things correctly, you need to have an...

Try editing your /etc/macfanctld.conf file.

I don't know, but does it behave same using OS-X - is it just as easy to wake-up?

My MBP uses magnets to indicate that lid is closed - I guess MBA is same. Perhaps yours are not positioned...

rEFIt installs in your OS-X partition from memory.

It will be in /efi/refit in your Macintosh HD partition.

You can delete it (the /efi directory and all contents).

Probably best to follow...

Have you seen my experience?

http://philatwarrimoo.blogspot.com.au/2012/06/unubtu-1204-on-macbook-pro-91-non.html

I'm using it now - main problem is no resume after sleep.