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I'm sorry if this has been asked before.

A little background: I have to use an Ubuntu VM for work (host is Windows 7 x64, running Oracle VMWare 4.2.4r81684 on a HP ProBook 4730s laptop), mainly for low level network control. So, I installed Ubuntu 12.04, this was a few weeks back.

I set the upgrade process going a few days ago and let my VM do it's stuff. When I came back several hours later, the upgrade process had crashed - I can't remember the error message exactly, but it was something along the lines of one of the Quantal software servers being unreachable. I was prompted to reboot and did... foolishly.

Once the VM had rebooted, I logged on and was presented with the Quantal wallpaper only. I noticed that my mouse movements weren't being mapped correctly and that some keystrokes weren't being accepted first time. Several minutes later, I was prompted about a problem having occurred and was asked if I'd like to send a bug report.

The application unity greeter has closed unexpectedly.

Executable path: /usr/bin/unity-greeter

I hit Ctrl+Alt and T and issued the following commands

dconf reset -f /org/compiz/
setsid unity

In the log that was spat out, I noticed something along the lines of

OpenGL Illegal instruction*

I needed to boot into this VM (I figured it'd be quicker to fix this, than re-install Ubuntu 12.04 and all the applications that I use), so I attempted to install xfce4. When I issued the command

sudo apt-get install xfce4

I was told that there where pending installs and that I should run the command

sudo apt-get -f install

before installing anything.

I ran that command and noticed that there where a bunch of Linux Image headers 3.x installing. I rebooted to see if this fixed the problem - no dice. So, I pulled up another terminal (with Crtl+Alt+T after logging in) and installed xfec4, then logged out.

When I logged into the xfce 4 desktop environment, I was presented with the same message about the unity greeter having closed unexpectedly, but was able to use the VM.

I know that I'm being pretty vague here, and I apologise for that. Is there a way to "fix" Ubuntu 12.10 on my VM, or to rollback to 12.04?

Note: I'd have pasted the entire log, but I'm having trouble bringing another terminal up after logging on.

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closed as off-topic by Eliah Kagan, Seth, Alvar, Eric Carvalho, guntbert Aug 23 '13 at 11:56

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This describes a problem that can't be reproduced that seemingly went away on its own or was only relevant to a very specific period of time. It's off-topic as it's unlikely to help future readers." – Eliah Kagan, Seth, Alvar, Eric Carvalho, guntbert
If this question can be reworded to fit the rules in the help center, please edit the question.

Any update about this? Did you solve the problem without reinstallation? If you didn't, could you run dpkg --configure -a && sudo apt-get update then read this answer: askubuntu.com/a/333364/169736 –  Braiam Aug 16 '13 at 16:23
I ended up having to re-install, but not upgrade. It seems that moving to Unity killed the guest completely. I guess it'd because the guest was on a laptop (needed the guest for roaming work, where I work). So, I just replaced it with Xubuntu. It's a shame, really because I quite like Unity. –  Jamie Taylor Aug 19 '13 at 17:28
Why not just write that as answer and accept it ;) –  Braiam Aug 20 '13 at 14:05
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