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I was trying to install the crossover package on my laptop when the following happened:

  1. Icons started getting removed from the sidebar (or launcher?)
  2. The package manager was unresponsive for >5 minutes when I tried to stop the installation
  3. I tried to shutdown and at this point everything else was also unresponsive
  4. I shut it down with a long press of the power button
  5. I start it again and it's stuck in the start up screen (purple background + 5 dots)

apt-get upgrade results in this:

enter image description here (Click images to enlarge)

fsck:

enter image description here

There were some other questions which were solved by fixing LightDM; however that's correct in my laptop.

This is the output on pressing Esc:

kernel output

There was a thread which suggested aptitude install lightdm but when I do that I'm told that all the packages mentioned above (in apt-get upgrade) will be removed and ~500 MB will be freed. So I'm not sure if that's the way to go.

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  • more details needed like dmesg and syslog along with your h/w configuration
    – Ashu
    Feb 6, 2016 at 18:42
  • My laptop is an inspiron 3521; afaik it has an Intel graphics card and not nvidia! $ nvidia detector -> none
    – rohithpr
    Feb 6, 2016 at 18:57
  • You probably broke a few packages when you shut down your computer in the middle of an upgrade. Please edit your question to include (a link to) the content of /var/log/apt/history.log and /var/log/apt/term.log. Also, please use text instead of images to reproduce text content (see How can I run a command and copy its output? and How can I easily share the output of a command or a text file with others?). It is much more accessible and searchable.
    – David Foerster
    Feb 7, 2016 at 19:06
  • @DavidFoerster - Thanks for the edit! I wrote the question from my phone when I was locked out of my laptop; hence the crappy formatting! I had to resort to uploading images because I wasn't able to login but was stuck with the terminal that we get on doing ctrl + alt + F1. There's no copy-paste there!
    – rohithpr
    Feb 8, 2016 at 3:15
  • The questions linked in my previous comment contain many approaches to purely command-line based solutions which work in any virtual terminal. You only need a working internet connection (or a writeable external storage medium and a seconds computer – but this way is more complicated).
    – David Foerster
    Feb 8, 2016 at 8:58

2 Answers 2

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A random thought made me try unity -v which told me that unity wasn't installed.

$ sudo apt-get install unity and I got to the login screen. Here I couldn't get in despite entering the correct password.

By following the steps given here I entered sudo apt-get install ubuntu-desktop and managed to login.

A few programs that were previously installed are now missing but I managed to login successfully without losing any files.

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Have you try this:

sudo apt-get install --reinstall unity
dconf reset -f /etc/compiz 
unity --replace --reset-icon &disown

and it might work fine this way

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  • I've already solved the issue using sudo apt-get install unity so there's no way for me to test your solution but it looks similar, so please leave it here! Thanks!
    – rohithpr
    Feb 7, 2016 at 3:25

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