Ubuntu 18.04 not loading

Question

I upgraded to Ubuntu 18.04 from 16.04. On startup the display is black for 15 minutes, doesn’t boot and is stuck indefinitely displaying Ubuntu logo. Kindly let me know how do I boot successfully as I don’t want to lose my important files.

Thank goodness you made a backup before attempting the upgrade. — SDsolar, Apr 28 '18 at 17:45
Thanks SDsolar. The issue was 'unmet dependencies' which I resolved from root shell. And my files are safe. — Suhas Gowda, Apr 29 '18 at 05:45
I think for this reason this is happened.A warning to Ubuntu 16.04 LTS users: you can't upgrade to 18.04 LTS through this guide because they already warned that it will not be available through 'do-release-upgrade' until 18.04.1 — Fazla Imran Mony, May 21 '18 at 11:26

score 5 · Answer 1 · edited Oct 12 '18 at 07:05

Try setting nomodeset in kernel parameters.

When grub loads and you get a screen to choose OS to load (if in dual-boot) or press Shift to load grub menu if you have only Ubuntu installed. Then with the Ubuntu option highlighted press e.

You will see something like this:

recordfall=1
save_env recordfall
set quiet=1
insmod ext2
set roothd(0,1)
search --no-floppy --fs-uuld --set 9009-9234
linux /boot,mlinuz-2.6.91.-9 root=i1U10=90.7bf99-923.1 ro quiet  splash
                                                                       ^
                                                                       |
initrd /boot/initrd.ing-2.6.91-9-generic

Add the nomodeset at the arrow indicated so the line looks like:

linux /boot,mlinuz-2.6.91.-9 root=i1U10=90.7bf99-923.1 ro quiet  splash nomodeset

Now press F10 to boot.

If this works we set the nomodeset permanently as follows:

Do the above again, and...

Open a terminal app and type "sudo nano /etc/default/grub" Enter your password if prompted. Move the cursor to the line that looks like the following:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Add the nomodeset here so that the line looks:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"

Press Ctrl-O the Enter to save, Then Ctrl-X to exit.

In the terminal, type sudo update-grub and hit enter. Once complete, you should be able to reboot your computer with this change made.

Many thanks for your response xypnox. The issue was 'unmet dependencies' which I resolved from root shell. — Suhas Gowda, Apr 29 '18 at 05:43
@SuhasGowda If you found a suitable way to tackle your problem you should post an answer so that people having the same problem can see what worked — xypnox, May 01 '18 at 07:47
It worked for me. I set up a virtual machine and had this error — Svetoslav Marinov, Jun 26 '19 at 14:05

Suhas Gowda · Accepted Answer · 2018-05-09T06:51:31.233

1

I followed the steps below in order;

1) To connect to Wi-Fi from command line, I followed the instructions from this link -> https://www.addictivetips.com/ubuntu-linux-tips/connect-to-the-internet-from-the-command-line-on-linux/

2) Once the Wi-Fi connection was established, broken packages were fixed referring to the link below;

http://www.iasptk.com/ubuntu-fix-broken-package-best-solution/

3) Finally, the OS was upgraded according to this article → https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-18-04

edited May 09 '18 at 06:51

answered May 08 '18 at 11:42

Suhas Gowda

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Please click the gray checkmark beside your answer to mark it as accepted which will change its color from gray to green. – karel May 08 '18 at 11:46

Ubuntu 18.04 not loading

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