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Hi guys this error just popped up in my VirtualBox. After the error screen shows up, I press command+F1(I use a Macbook) and a command line comes to the screen that wants me to login. After logging in, i tried 

sudo apt-get autoremove 
sudo apt-get autoclear

then press command+F8 but same error still remains.

Warren Hill
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user175924
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    When you enter your password with sudo nothing is displayed this is by design. Just type your password and press ENTER. If you do not get an error message it worked. If you do then what's the error. You can reset the password if you have forgotten it by following these insructions – Warren Hill Jul 17 '13 at 08:40
  • I solved that problem but now i could not solve my main problem. Ubuntu still shows the same error. I tried

    sudo apt-get autoremove sudo apt-get autoclean

    but still got the same problem.

    I also tried to remove virtual box and reinstalled both vb and ubuntu.

     – user175924 Jul 17 '13 at 11:37
  • Edit the question with the exact error message you are getting. – Warren Hill Jul 17 '13 at 11:42

1 Answers1

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As you haven't mentioned the version of VirtualBox nor the version of the system you were installing, I'll describe the solution I've found for VB v4.1.12 and Ubuntu 12.04 LTS guest machine.

This OS version was installed with X Server from quantal (12.10) and displayed error message about low-graphics mode. When you remove this error window using Esc and log in using console, try to uninstall current X Server from quantal from the guest machine:

sudo apt-get purge xserver-xorg-core-lts-quantal
sudo apt-get autoremove

As soon as this will be done, default core X Server will be installed automatically. If this will not happen, try to install it manually (including all its dependencies):

sudo apt-get install xserver-xorg-core

After reboot guest OS should work properly.

whtyger
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