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I have installed Ubuntu 12.04 LTS alongside Windows 7. Upon boot I observe that after the splash screen is displayed, screen goes black though I am able to hear login prompt. I am new to Ubuntu (and Linux) therefore I will request you please suggest step-wise approach to fix the issue.

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marked as duplicate by Web-E, Eliah Kagan, hhlp, vasa1, Mik Mar 18 '13 at 12:26

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

up vote 0 down vote accepted

To set kernel boot options, you must edit your GRUB configuration. You can do this temporarily for a single boot by entering the GRUB menu. If you do not get to see the GRUB boot menu after the bios automatically, you may have to press Shift key after the bios logo to get in to GRUB:

Select the default Ubuntu kernel (usually the top one), and rather than pressing Enter, press E to edit. Press Down Arrow until you get to the line that starts with Code:

linux /boot

and press End keys to position your cursor at the end of the that line usually ending with “quiet splash”. Now you can type in additional kernel options like nomodeset

See also Ubuntuforums "Thread: How to set NOMODESET and other kernel boot options in grub2"

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This may be due to video driver issues. It happened to me also, but on desktop machines.

If you have an Nvidia video chip, I would suggest the following steps:

  1. Boot in text mode:

  2. Try to install Nvidia drivers as described here:

Good luck!

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the links for reference. – Dan Mar 18 '13 at 9:18
OK, Dan I will try to follow your advice! – Calin Chiorean Mar 18 '13 at 10:19

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