Hey I just put Ubuntu on my laptop which is the exact same model! :D
I see the previous post has a dead link that's why I'm putting this here incase you didn't get to instructions.
I can help you as I'm 100% setup and loving it, hopefully I can create decent instructions for you.
1st thing if you don't have a lot on your ubuntu installation I would start with a fresh installation, so we don't have any drivers half installed from whatever testing you did before.
This command will help you see how many drivers nvidia-wise you have installed currently.
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lsmod | grep 'nvidia'
If you can't do that you'll have to search around a little on backing up and removing kernel modules.
Once you've assured that you've got a clean slate (with just the basic nvidia driver that ubuntu installs at the beginning or just some trash driver that works for 640x480 display) you need to follow these steps:
1) Download the latest driver from here:
http://us.download.nvidia.com/XFree8..._64-256.53.run (save it somewhere you'll remember. I'll use ~/Downloads in instructions)
If the above link doesn't work, go here:
http://www.nvidia.com/object/linux-d...53-driver.html and follow along screen prompts to download.
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cd ~/Downloads
wget http://us.download.nvidia.com/XFree86/Linux-x86_64/256.53/NVIDIA-Linux-x86_64-256.53.run
2) If you're currently in X Server hit Ctrl+Alt F1 to go to cli login prompt and login
3) Type this in to stop your current X Server session:
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sudo /etc/init.d/gdm stop
4) Then we need to execute the installer script:
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sudo sh ~/Downloads/NVIDIA-Linux-x86_64-256.53.run
(The first run it'll babble about the current driver not being disabled and it'll ask if you want it to disabled it with blacklist file, say yes)
5) Restart your computer and redo steps 2, 3 and 4
6) Follow all prompts and continue past any errors, if you get to the screen where it shows a progress bar for building the kernel module you should be in business.
7) Accept the prompt to allow it to generate an xorg.conf file (which will be stored in /etc/X11/)
8) Once it's all done restart and you should be presented with a nice layout, (your screen resolution native max is actually 1920x1080, which is true 1080p resolution)
Let me know if this works!
If you have issues with your sound let me know and I can help with that as well, also I can publish the very generic xorg.conf file that nvidia generated for me if you need to compare should any issues arise with your installation.
Editing to just go ahead and put the sound driver help for the issue people experience with this laptop and other like models (it's really easy to fix)
Run this command:
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sudo apt-get install linux-backports-modules-alsa-2.6.32-25-generic
That will fix your sounds, enjoy Ubuntu :D
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