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Thread: Ubuntu not start properly

  1. #1
    Join Date
    Apr 2006
    Beans
    2,809

    Ubuntu not start properly

    Hi all,

    Ubuntu 20.04 desktop

    For unknown cause I just found unable to start Ubuntu properly. Finally it ends at "Not listed?" screen. (Please see attached screenshot).

    Please advise where I have to check to sort out the problem. Thanks

    Regards
    Attached Images Attached Images

  2. #2
    Join Date
    Jun 2010
    Location
    London, England
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Ubuntu not start properly

    What you are seeing is the login screen. It should show the username on top of the words "not listed." So, the big question is, why is your username not showing?

    What happens if you press Enter? Does a panel for the password appear? That is what would happen normally. If you click "not listed" with the mouse a username panel should appear. Try entering the username and then press enter. A password panel should then appear. Put in the password and press Enter. What happens?

    Is it possible that the only username for that machine has been deleted?

    Regards
    It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
    Ubuntu user #33,200. Linux user #530,530


  3. #3
    Join Date
    Jun 2006
    Location
    Nux Jam
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: Ubuntu not start properly

    you might boot into recovery mode or try tty, then glance at 'journalctl -b' output into a terminal , for error (red line)

  4. #4
    Join Date
    Apr 2006
    Beans
    2,809

    Re: Ubuntu not start properly

    Hi,

    Clicking mouse or hitting Enter key without response.

    I can't start boot loader, pressing ESC key during booting without response. This is a VM/Guest of Oracle VirtualBox. I have posted my problem on their Forum. The moderator replied me saying that this is the problem of Ubuntu, not their problem.

    Please advise how to start recovery mode after booting up Ubunru?

    Regards

    Edit:
    ===
    Finally I started recovery mode, drop to root shell and performed follows;

    # mount -o remount,rw /
    # mount -a

    # lsblk
    Code:
    sda
     -sda1
         -ubuntu--vg-root
         -ubuntu--vg-swap_1
    sr0 ......
    # grep '/home' /etc/fstab | grep ext
    # mount /dev/sda1 /home
    Code:
    mount: /home: unknown filesystem tyep 'LVM2_member'/
    I have no idea to go further? Kindly advise. Thanks

    Regards
    Attached Images Attached Images
    Last edited by satimis; March 3rd, 2021 at 05:33 PM.

  5. #5
    Join Date
    Mar 2011
    Location
    19th Hole
    Beans
    Hidden!
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: Ubuntu not start properly

    Your thread has been moved to Virtualisation for responses more relevant to your issue.

  6. #6
    Join Date
    Oct 2014
    Location
    Santiago DR
    Beans
    155
    Distro
    Ubuntu

    Re: Ubuntu not start properly

    Try to reinstall Ubuntu and avoid lvm2 installs. Just use the standard ext4 install and use the whole virtual disk.
    Did you check the SHA codes for the download? Maybe the download had a problem.
    Last edited by lammert-nijhof; March 8th, 2021 at 08:39 AM.

  7. #7
    Join Date
    Apr 2006
    Beans
    2,809

    Re: Ubuntu not start properly

    Quote Originally Posted by lammert-nijhof View Post
    Try to reinstall Ubuntu and avoid lvm2 installs. Just use the standard ext4 install and use the whole virtual disk.
    Did you check the SHA codes for the download? Maybe the download had a problem.
    Hi,

    Thanks for your advice.

    According to my recollection I have upgraded Ubuntu lately. Maybe the problem came from download.

    I think to delete this VM would be easier for me. I have only one cloned website running on it. I'll clone another new VM from a VM having LAMP installed. Afterwards I'll clone the deleted website on Duplicator packages created on its LIVE website.

    Thanks

    Regards

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