Ubuntu problem with Nvideo graphic that say low graphic mode

[maverun]

Greetings, firstly, please excuse with my english and grammar...i have a problem with my computer. let me start from beginner.

My father have pass me his laptop which is Macbook Pro mid 2009.
After few year, i don't like OSX so i thought why not try Linux since i don't have window Key anymore. Also It is my first time to use Linux, so i want to try and see how compare to others. So i research for many week therefore i decide to try Ubuntu. So i did, it was great, after many months, there was upgrade, so i upgrade to 14.05(not sure which version but i am sure it is latest.) it still work fine but this week, i mess up really bad. When i restart my computer i came upon this

" The system is running in low-graphics mode"
with option, "Run in low-graphic mode for one season" "reconsider configure" etc.

I have no clue what do to so i try few solution i came across.
1: Exist console login
2: Run in low graphic mode for one season
3: go to Grub, recovery mode, failgurb(Something like that
4: at Error, press FN+Control+Command+F1 to open terminal

out of all those problem, none work, when i mean none work, Error gone (like doing in number 1 and 2) it show black screen but there was blinking at top left "-" i can't even see my mouse. Speak of which mouse, when i move my mouse, i see my cursor black X instead normal pointy..not sure if that is normal for Graphic mode error


for number 4, I open terminal and try install, Sudo apt-get install Nvideo (something along with that line, i copy line from internets for installing Nvideo) nothing happen after i type that, not even ask for password..

I am able to go on OSX, which mean computer is not actually broken, files may be broke in Ubuntu.

Is there any solution can you think of? I am looking forward to your word.

Please note, i am very new to Linux, command all those things, i only know Sudo which is ask for password (Permission to do stuff) Please Guide me easily to understand.

Many thanks!

 

[w3techie]

According to the information provided on this page, you should open a terminal CTRL+ALT+T and use the command:

sudo apt-get install --reinstall unity-greeter
sudo dpkg-reconfigure lightdm


Open lightdm.conf file with the next command:

sudo nano /etc/lightdm/lightdm.conf

And try running the commands:

greeter-session=unity-greeter
or
greeter-session=ubuntu

If one does not seem to work, try the other.

It will prompt you for your root password that you logon with at startup. Just type the password though it will not show you any characters in a terminal session, the cursor will just blink. You may have to reboot your system after running the commands, but that seems to be the tried and tested solution for this error.

Resource:

How to fix error "The system is running in low-graphics mode" ?

 

[JOHNN93]

your computer has no physical damadge.
acording to http://www.ubuntu.com/certification/desktop/
your laptop has not passed the certification.not that it wont work with ubuntu.
your problem is a driver problem.its a gpu problem.to be able to fix this knowing what sudo is is not enougf.
ubuntu is a cominuty most of your answers can be answerd here

this might help your problem here.

i whould advise downloading nd installing the latest version here