Ubuntu: Ubuntu 15.04 boot hangs on “Starting light display manager” after updates



Question:

I have recently taken the plunge to Ubuntu, and purchased the Dell XPS 13 Developer Edition. My first order of business was to wipe the "Dellbuntu" that came pre-installed and do a fresh install of 15.04. After some minor hiccups and googling I had a working installation of 15.04 for about a day. Then I was prompted to install some updates via the built in update manager and everything installed correctly, but I needed to reboot. Now, upon rebooting, and selecting my distro in GRUB, I am greeted by many lines of scrolling text, all prefaced with the green [OK] tag, except the last one which reads:

Starting Light Display Manager ... and deal with any system changes ..  

Upon which the boot hangs with a flashing underscore, and never moves.

How can I fix it?


Solution:1

Try to go to tty1 (Ctrl+Alt+F1)

Login and purge xorg and lightdm

sudo apt-get purge xorg lightdm  

Autoremove whatever's left

sudo apt-get autoremove  

Install lightdm and xorg

sudo apt-get install xorg lightdm  


Solution:2

There is an easier solution I think.
Try from client ctrl-alt-f2 (F1 might not work, as it is trying to boot)

Then run

sudo dpkg --configure -a  


Solution:3

If you have recently installed Nvidia Drivers, try removing them

Try to go to tty1 (Ctrl+Alt+F1)

  1. Find all Nvidia packages installed

    apt list --installed | grep nvidia  

    ex: there is a package named nvidia-352

  2. Remove the packages found like

    sudo apt-get remove --auto-remove nvidia-352  
  3. After the removal is complete, try booting again to your Ubuntu system.


Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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