[SOLVED] Updated to Ubuntu 11.10 on VirtualBox and now you get a blank screen when you reboot?
So you used the update manager to upgrade to the new Ubuntu 11.10 that came out a couple days ago and when you’re finished with the process, next time it boots you get a blank screen.

Do this:
1. Switch to a terminal.
Press “Ctrl+Alt+F1″ if you’re on Windows.
or
Press “Cmd + F1″ or “Ctrl + Alt_option + F1″ if you on MacOSX.
You will now be on a text based terminal (TTY1), and you will see that your VM has booted fine, you just didn’t have a graphical environment, therefore the blank screen.
2. Login in with your account on this text based terminal by entering your credentials.
3. Install virtualbox-ose-guest-utils.
(Yes, I also had my virtual guest additions installed before so that I could have full screen resolution, but the problem seems to be related to this and now ubuntu has a package on their repos that you need.)
sudo apt-get install virtualbox-ose-guest-utils [enter]
4. Reboot
sudo reboot
You’re done.
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October 26th, 2011 at 7:11 pm
Hi, I came across your article via Google, and I thought I should post instructions for a related problem, but a slightly different solution. Running Virtualbox on a mac, after updating Ubuntu to 11.10, I was stuck on the purple loading screen with 5 red dots.
1) Start up Ubuntu holding shift to access the Grub menu.
2) Select recovery mode. Previously, I had tried failsafe-x mode, but this appears to have disappeared!
3) Start fsck (to exit read-only mode).
4) To connect to the network, type in “dhclient eth0″ [enter] (without the quote marks).
5) Type in “sudo apt-get install virtualbox-ose-guest-utils” [enter]
6) Type in “sudo reboot” [enter], then select the first option.
November 2nd, 2011 at 12:18 pm
Excellent – thanks. Been trying to figure this out for the last week or so but couldn’t find anyone reporting the same problem.
Worked like a charm.
November 9th, 2011 at 1:43 pm
Worked for me after upgrading and being hung at the purple ubuntu startup screen. Thanks for the solution!
November 9th, 2011 at 6:08 pm
Legend, wow that fixed it. Thanks so much for publishing this fix!
Good job.
November 10th, 2011 at 7:00 am
Yeehah!
Thanks Pete! I’ve searched for a solution since the Ubuntu 11.10 version was released and your way worked.
Thanks again and all the best to you!
November 19th, 2011 at 12:49 pm
Thank you very much. This did the job.
January 4th, 2012 at 9:23 am
Thanks a ton dude.. Worked instantly.. Flawless!!
March 7th, 2012 at 7:14 am
Thanks! After trying out different solutions on the internet for days, this is the only one which worked.
March 8th, 2012 at 6:41 pm
Thanks so much. This totally solved the issue.
April 11th, 2012 at 9:09 pm
THANKS to OP and Pete, awesome tip! In my case I had to run “dhclient eth1″ and then re-install the guest addition but other than that it was spot on!
November 7th, 2012 at 8:37 pm
Thank you very much for your tip ! It worked instantly. Thank you again !