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Thread: Black screen after install 12.04

  1. #1
    Join Date
    Nov 2004
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    234

    Black screen after install 12.04

    Hi.


    Just finished installing 12.04 and after a smooth installation, when restarting i only get a black screen with a blinking slash.

    What can i do?

  2. #2
    Join Date
    Jun 2007
    Location
    Atlanta, GA
    Beans
    802
    Distro
    Ubuntu 15.04 Vivid Vervet

    Re: Black screen after install 12.04

    Quote Originally Posted by Pulka View Post
    Hi.


    Just finished installing 12.04 and after a smooth installation, when restarting i only get a black screen with a blinking slash.

    What can i do?
    Are you at a command prompt? If so you can "sudo apt-get update then sudo apt-get upgrade". Did you choose to install restricted format stuff? I did and it installed the correct Nvidia driver for my card.
    Registered Linux user #436067
    Registered Ubuntu user #29066
    -----------------------------
    Linux assumes you know exactly what you are doing.

  3. #3
    Join Date
    Nov 2004
    Beans
    234

    Re: Black screen after install 12.04

    No, it's not a command prompt. Yes, installed restricted format. I have nvidia

  4. #4
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: Black screen after install 12.04

    You may need add nomodeset.

    How to set NOMODESET and other kernel boot options in grub2
    http://ubuntuforums.org/showthread.php?t=1613132

    Natty or later Video issues. MAFoElffen
    http://ubuntuforums.org/showthread.php?t=1743535

    On first boot after install, press e on getting the GRUB bootloader.
    Hold shift from BIOS boot to get menu if only one system installed.
    Using arrow keys navigate to and delete quiet and splash and type the word nomodeset in their place
    Press Ctrl and X to boot (low graphics mode)
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  5. #5
    Join Date
    Apr 2012
    Beans
    3

    Re: Black screen after install 12.04

    I had the same issue... I upgraded from 11.10 to 12.04 and when I restarted it and got to the login screen, apparently the resolution is wrong and all the icons are crosses... When I logged in, nothing is on the desktop and the screen froze. My mouse cursor is gone and I couldn't switch to tty1 and there is no network connection. Only the clock is going. Don't know what's wrong.

    Linux upgrade is always a pain! Alas!

  6. #6
    Join Date
    Nov 2004
    Beans
    234

    Re: Black screen after install 12.04

    I'm sorry but don't know how to do what you said. I don't get to grub, and in BIOS i don' t have those options. I did get them booting foram the cd, but choosing nomodeset didn't work


    Quote Originally Posted by oldfred View Post
    You may need add nomodeset.

    How to set NOMODESET and other kernel boot options in grub2
    http://ubuntuforums.org/showthread.php?t=1613132

    Natty or later Video issues. MAFoElffen
    http://ubuntuforums.org/showthread.php?t=1743535

    On first boot after install, press e on getting the GRUB bootloader.
    Hold shift from BIOS boot to get menu if only one system installed.
    Using arrow keys navigate to and delete quiet and splash and type the word nomodeset in their place
    Press Ctrl and X to boot (low graphics mode)

  7. #7
    Join Date
    Apr 2012
    Beans
    3

    Re: Black screen after install 12.04

    same problem, i can't edit grub because i only see a black screen, no console or nothing... (after full instalation, now im on live cd)

  8. #8
    Join Date
    Apr 2007
    Location
    Shanghai
    Beans
    51
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: Black screen after install 12.04

    I upgrade from 11.10 to 12.04 and all I get is a blank screen and the top menu is hardly visible..

  9. #9
    Join Date
    Jun 2009
    Location
    SW Forida
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    Hidden!
    Distro
    Ubuntu

    Re: Black screen after install 12.04

    @lihaosky & gibsonsimswilson
    If the solutions here have not worked, please start your own thread as solutions will be different and we cannot work with different solutions and users in one thread and keep it straight which solution is for who.

    If you hold shift key down from BIOS until menu appears, do you get grub menu? It may not normally show menu if it has only found one system or you only have Ubuntu installed.

    If you do not get menu.

    Download this into liveCD and run the boot info script.
    Boot Repair:
    https://help.ubuntu.com/community/Boot-Repair
    You can repair many boot issues with this or Create BootInfo report & post the link to a run of boot info script so we can see your exact configuration.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  10. #10
    Join Date
    Nov 2004
    Beans
    234

    Re: Black screen after install 12.04

    Ok...

    tried grub recovery and managed to boot to the freshly installed 12.04.

    After that, opened terminal and did

    Code:
    sudo update-grub
    all is well now

    thank you all for your help

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