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This issue happened spounteniously, i don´t know what could have cause it as i wasn´t using the PC when it happened. I ruled out any messing around with the setting as the user doesn´t know how to enter the BIOS, doesn´t have the sudo password and was only using firefox and libreoffice when it happened.

After the plymouth sequence i get this error.

And this option: enter image description here

I follow each option and nothing happens after that. The issue persist after rebooting. I choose the other options to see if anything happens, i either get back to option 1 or doesn´t show anything anormal. (I have pictures i someone wants to know)

What i found weird is that event though the error is possitioned in the chip, however ubuntu 10.04 and 12.04 run fine in a live CD

I saw that some people are having issues when LightDM has a non default wallpaper, but i use a default one.

Thanks in advance.

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marked as duplicate by bain, Eric Carvalho, Jorge Castro, karel, Warren Hill Jun 30 '14 at 9:06

This question was marked as an exact duplicate of an existing question.

This error is usually located in the graphics's driver. As you said : " however ubuntu 10.04 and 12.04 run fine in a live CD " I assume that something went wrong with your currently installed (additional) driver.

I will not include every possible solution here (from different graphic cards and drivers).

A suggestion would be to reinstall the driver from recovery mode. Also would be good to try to repair any broken package through the same procedure (recovery mode).

Following is an example for Nvidia additional driver. (nvidia-current)

1) Boot as usually but in grub menu select the recovery mode . (If you have no grub menu, hold down [Shift] key during boot until grub menu loaded)

2) At the opened window select "Network" so the network connection established. Also this option will make the system Read-Write (and not only read)

3) Next choose "Dpkg - Repair Broken Packages"

4) Next you select ROOT

and you can reinstall nvidia drivers (bellow command depends on what drivers you had install previously)

For nvidia-current

apt-get install --reinstall nvidia-current

note here that you don't need sudo cuz you are already connected as root.

At the end you can select "resume" and see if your problem fixed.

Good Luck

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