system freezes consistently, chromium + gnome-terminal

[Gino]

1. First, make sure you have *no* open windows on your Ubuntu 14.04 Unity desktop (which uses the LightDM X Windows manager. This step #1 is *VERY* important !
2. Launch Chromium browser
3. Launch gnome-terminal
5. Minimize the chromium browser by clicking the minimize button (middle button in upper left corner of your chromium browser window, which looks like a dash symbol).
6. Click on the gnome-terminal you opened up and press return a couple times to make sure that's responding to keyboard input.
7. in that gnome-terminal use Ctrl-D to close that terminal.

Desktop should now be unresponsive.

[Gino (ginobeans)]

I just re-installed ubuntu on my laptop and the bug seems to have gone away.

The only thing I can think of is that, a week or two ago, I installed elementary-os, to try it out, then later uninstalled it.

But maybe elementary-os may have corrupted my system causing the issue I described in this bug report ?

[Gino (ginobeans)]

Just an update. I generated a list of installed packages between my "good" machine (bug does not manifest itself) and my
"bad" machine (bug manifests itself).

Went through the list and identified about 62 possible culprits.

Then, I used 'sudo apt-get -y remove $i' in a bash while loop to remove these packages.
e.g.:

     for i in $(cat packages-to-remove.text ); do sudo apt-get -y remove $i; done

Then, I ran 'sudo apt-get autoremove' to remove unreferenced packages.

Finally, I rebooted and the bug seems to have gone away. So, I think the problem may be related to one or more of the 62 packages listed in the attachment ( packages-to-remove.text ).