I just recently installed Ubuntu 9.04 on my laptop with no problems whatsoever. I'm just now learning that 9.04 is unsupported and it's making installing software difficult. I came to the conclusion that I should just update to the latest version. I then found the latest version at the time 12.10 and made my disc so I can repeat the installation process I did for 9.04. Which brings me to my problem, I can't install 12.10 because I come across certain problems.

I have made the proper changes to my BIOS to make first boot option my CD/DVD ROM and then I get to the Ubuntu Menu:

  1. Try Ubuntu without installing option takes me to a black screen with a blinking cursor on the top left of the screen and stays there.

  2. Install Ubuntu option takes me to a black screen with a blinking cursor on the top left of the screen and stays there.

  3. Check disc for defects option takes me to a black screen with a blinking cursor on the top left of the screen and stays there.

  4. Test Memory option takes me to a blue Memtest86+ v4.20 which fails at 47% on Test #7 [Random number sequence] and leaves me no choice but to hit (ESC) to Reboot. Now assuming this was my issue then the next option wouldn't work, correct?

  5. Boot from first hard disk option takes me to Ubuntu 9.04 and runs just fine.

Things I've seen while researching my problem is a bad iso file. I can assure you that I already validated my "ubuntu-12.10-desktop-i386.iso" file with winMd5Sum. I'm thinking it has to do with the GRUB. I have no idea what that is or how it effects my boot process.

I apologize for such a lengthy description of my problem but I hope it has given enough information so that when it is answered it helps anyone else with similar type of issues.

Below I have given screenshots of my computer. I left out the black screen with a blinking cursor because it's literally what I explained it to be.

Ubuntu Menu: https://i.sstatic.net/QNTq4.jpg

Memtest86+: https://i.sstatic.net/gGtdx.jpg

  • What are the specs of your machine, and how long did you wait after you selecited "Install"? Commented Apr 27, 2013 at 2:35
  • Have you read any of the 151,000 posts returned by google when looking for "Ubuntu 12.10 black screen"?
    – terdon
    Commented Apr 28, 2013 at 22:05

2 Answers 2


You can try installing ubuntu 12.04 and than upgrading, maybe that would work, but try nomodest first, it may be quicker solution.


Usually when you can't boot you should add nomodeset as a kernel parameter. I believe you can set that under "modes" or "other options".



The newest kernels have moved the video mode setting into the kernel. So all the programming of the hardware specific clock rates and registers on the video card happen in the kernel rather than in the X driver when the X server starts.. This makes it possible to have high resolution nice looking splash (boot) screens and flicker free transitions from boot splash to login screen. Unfortunately, on some cards this doesnt work properly and you end up with a black screen. Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded.

However, you should put away the CD, assuming you want to upgrade, and use the server install method:


sudo apt-get update
sudo apt-get install update-manager-core
sudo do-release-upgrade

Please backup your data before you do that - whenever I did this I almost ALWAYS had issues. It was never anything critical but usually it was like an icon package that didn't get installed.

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