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I recently tried installing Ubuntu 12.04 on my new computer, I tried the windows installer and from a CD but both have failed. As soon as I try to reboot my PC and install it this weird colorful, pixelated checkerboard fills the screen and soon after my monitors loses the signal. I tried following some fixes but they all needed the terminal which I couldn't access. My computer specs are:

  • Intel i5-2320 3.0Ghz
  • 8GB Ram
  • AMD Radeon HD 6670 2GB GDDR3

I use dual monitors but I tried the installation with and without both plugged in. Any help would be appreciated.

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1 Answer

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Try to boot through grub into the advanced mode and recovery mode. Once the recovery window pops up, select resume.

If this works, check out grub start option nomodeset for the GRUB_CMDLINE_LINUX_DEFAULT and update afterwards with 

sudo update-grub2
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I'm having a bit of trouble with your reply. I have looked in the installation folder for an option to boot through grub but there's nothing. I've checked in C:\ubuntu\disks\boot\grub and C:\ubuntu\install\boot\grub but cant seem to find anything, thanks again for the help. – GamingTom Sep 20 '12 at 21:35

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