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The system is running in low-graphics mode is the message I received after my laptop froze when I upgraded to ubuntun 14.04 I need this sorted been on google search all day and im not winning please help need to get my laptom running

292990
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2 Answers2

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Try the following:

When you hit the log on screen type ctrlaltF1 to open a tty1 session.

Log in with your username and password.

Type 

sudo service lightdm stop

and then

sudo apt-get install --reinstall ubuntu-desktop

See if that solves your problem.

Mitch
  • 4,807
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To clarify more on Musher's answer, it is a problem with Ubuntu's default display, as lightdm is being obsolete and unsupported. To fix this press Ctrl + Alt + F1 to open a temporary display-lacking terminal. If that doesn't work use Ctrl + Alt + F3 instead. Once there, there are a two options to solve lightdm.

1: Use GDM Instead RECCOMENDED

 sudo apt-get install gdm && sudo dpkg-reconfigure gdm

Then select GDM and hit Enter.

2: Repair LightDm NOT RECCOMENDED

 sudo apt-get purge lightdm && sudo apt-get clean
 sudo apt-get install lightdm && sudo dpkg-reconfigure lightdm
 sudo apt-get purge ubuntu-desktop && sudo apt-get clean
 sudo apt-get install ubuntu-desktop && sudo shutdown now -r
David
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