Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

This question already has an answer here:

I installed Ubuntu with my LiveUSB, and it said to restart in order to use your system, so I restarted. Now, I am just stuck in a completely black screen with a blinking _ underscore cursor.

I have already waited 10 minutes for something to happen, but there is no response from the computer.

I don't know what the problem could be, but maybe the message I got during installation that said APT couldn't be configured, so no additional apps will be installed was the problem?

Thanks.

share|improve this question
add comment

marked as duplicate by Kevin Bowen, Radu Rădeanu, user68186, Stephen Myall, Eric Carvalho Jun 7 '13 at 1:04

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

3 Answers

Purge and reinstall GRUB, following instructions HERE

Source: I had the same problem.

share|improve this answer
1  
Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. –  fossfreedom Apr 27 '12 at 15:51
    
I did that and now when I start it says 'error:no video mode activated.' What now? –  Kevin Arutyunyan Apr 27 '12 at 16:12
add comment

As a tip , i have the same problem but by pressing the space key multiples times it does boot and show me the ubuntu startup logo....

share|improve this answer
    
Thanks for the tip! But it now gives me the error: 'init: Failed to create pty - disabling logging for job' How to fix this? –  Kevin Arutyunyan Apr 27 '12 at 16:28
    
this is one of bugs from 12.04 ( check google ) but i do advise you to repair the grub : ubuntuforums.org/showthread.php?t=1581099 –  florent Apr 27 '12 at 16:39
add comment

this is one of bugs from 12.04 ( check google ) but i do advise you to repair the grub : ubuntuforums.org/showthread.php?t=1581099 – that should fix it!

share|improve this answer
    
I already repaired that for the second time, still not working. And does that mean that 12.04 wont work for me now or what? Shall I try reinstalling? –  Kevin Arutyunyan Apr 27 '12 at 16:46
    
does 11.10 work for you? was it an update? more info please? do you other boot? –  florent Apr 27 '12 at 16:48
    
Yes, I already used 11.10 for three months. I deleted it and installed 12.04 fresh with a liveusb, so no update. I don't have any other os now. My PC is an acer aspire one netbook. –  Kevin Arutyunyan Apr 27 '12 at 16:51
    
I reinstalled it now and did the same things again, but I have the failed to create pty error again -.- I'm really disappointed of this new version. 11.10 had no problems. –  Kevin Arutyunyan Apr 27 '12 at 17:31
    
I tried reinstalling Ubuntu 3 times, repairing grub 5 times, every time I had the same problem. Shall I try to use a LiveCD? –  Kevin Arutyunyan Apr 28 '12 at 7:07
add comment

Not the answer you're looking for? Browse other questions tagged or ask your own question.