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Thread: ubuntu fails to boot

  1. #1
    Join Date
    Feb 2009
    Beans
    60

    Unhappy ubuntu fails to boot

    Hi all. I seem to need help.

    Overnight, my ubuntu installation appears to have developed a major problem. It fails to boot.

    To be more exact, the computer starts normally when switched on, but it takes ages for the GRUB screen to appear. Once I choose for it to boot in Ubuntu, it switches to a purple screen (no loading indicator, just purple), or occasionally to a black screen with a flashing cursor. After that, nothing happens.

    I have tried to boot through recovery mode, but that does not work either.

    This problem occurred suddenly, literally overnight. I think the evening before, ubuntu performed some updates. I run on a dual install with Windows 7, which I hardly ever use (I do right now, of course).

    Can anyone suggest what I might do about this?

    Thanks.

  2. #2
    Join Date
    Feb 2009
    Beans
    60

    Re: ubuntu fails to boot

    Hi again.

    I managed to start ubuntu as a live session from a USB stick. I ran the GRUB repair program - but it did not help.

    This is the link it produced: http://paste.ubuntu.com/1411448/

    I really need my system to work again, this is by the worst and the most frustrating problem I have had in nearly 4 years on ubuntu. And not a single reply so far...

    HH

  3. #3
    Join Date
    Aug 2006
    Location
    Finland
    Beans
    11
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: ubuntu fails to boot

    I have same problem. But my computer wont show grub at all. It boots normally to logon, I can hear login sound and login, but screen stays black. All I see when I boot my computer is bios and after that screen stays black. I also have dual boot to windows 7. And this problem came today, yesterday it was ok.

    System
    Ubuntu 12.04
    Windows 7
    AMD Radeon HD 5770

  4. #4
    Join Date
    Feb 2009
    Beans
    60

    Re: ubuntu fails to boot

    Bump - does anyone know anything about this?

  5. #5
    Join Date
    Feb 2009
    Beans
    60

    Re: ubuntu fails to boot

    Oh well. I ended up simply backing up my data, wiping the ubuntu install entirely (with gparted, leaving the disk space unallocated) and then reinstalling as dual boot. Considering my lack of experience, it seemed the quickest and cleanest way. Everything works fine now.

    HH

  6. #6
    Join Date
    Feb 2009
    Beans
    60

    Angry Re: ubuntu fails to boot

    Or not.

    It worked for 1 day. Ubuntu booted ok several times after the reinstall. Now, I can not boot any more. Instead, I get the "unknown filesystem. Grub rescue" message. To make it worse, live session does not work, neither from CD, nor from USB.

    I have no idea what to do.

    Does anyone?

    HH
    Last edited by hhall; December 6th, 2012 at 12:47 PM. Reason: typo

  7. #7
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: ubuntu fails to boot

    If it worked and then stopped, is it really some sort of hardware issue.

    Often memory issues can cause that type of issue. You might want to run memory tests from grub menu.

    Some also suggest removing one memory stick (if you system is configured so you can) and test, then try other memory stick. Sometimes just cleaning contacts helps. You can use an eraser and then clean with alcohol. Make sure it dry before reinstalling.
    Oldfred on vacation. Back Sept 9. Will not have much if any Internet access.
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  8. #8
    Join Date
    Feb 2009
    Beans
    60

    Re: ubuntu fails to boot

    Thanks, Oldfred.

    Yes, I am beginning to fear you may be right. I have tried booting from a memory stick and from CD (DVD, actually), and it worked only oonce on many tries, from a live DVD, and then crashed. Maybe a HDD issue, or eve a motherboard one? Running a check from a Gparted live CD now...

    HH
    Last edited by hhall; December 6th, 2012 at 08:18 PM. Reason: another typo

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