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The menu bar and Unity launcher have disappeared in Ubuntu 14.04. Also cannot access the terminal via ctrl + alt + t.
I have tried every solution for this issue that I can find, from re-installing untiy and compiz to resetting Unity and everything. I've gone into the compiz manager and reactived Unity.
Nothing has worked.
When trying to reset Unity, or do anything with it really, I get this message
(process:6332): dconf-WARNING **: failed to commit changes to dconf: Could not connect: Connection refused

EDIT: Installed 14.04 a day ago. The issue happened after a reboot. After installing virtual Box

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possible duplicate of Unity doesn't load, no Launcher, no Dash appears –  karel Aug 29 '14 at 11:15
The exact same thing happened to me. Afraid to attempt re-installing virtualbox. Ever figure out why this happened? –  Jay Soyer Oct 25 '14 at 3:26
Running export DISPLAY=:0 on a separate tty, following the procedure outlined in askubuntu.com/questions/457016/… to set the DBUS_SESSION_BUS_ADDRESS variable and finally running dconf reset -f /org/compiz/ did the trick for me. –  Janaka Bandara Nov 27 '14 at 1:13

1 Answer 1

Enter the following commands:- Ctrl+Alt+F1 login there by user name and password

try sudo service lightdm restart

If lightdm fails to get back at normal :-

then Enter:- sudo apt-get update

sudo apt-get install --reinstall ubuntu-desktop
sudo apt-get install unity
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protected by Community Aug 29 '14 at 11:50

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