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I'm using Ubuntu 14.04 with Windows 10 dual.

I don't know what happened, but when I tried to open ubuntu today, I only saw black screen. Then I shut the computer by force (pressing the power button) then reboot. After this moment, whenever I open Ubuntu:

  • No tab on the left.
  • No tab (including power) on the topright.
  • No file, view etc. panel in any window.
  • Alttab does not work.
  • Ctrl alt t does not work.
  • Alt f4 only works in closing browsers and other windows.
  • Only Ctrl alt del works.

I don't want to format because I installed imporant python data and configurations which I don't want to go through again.

TugRulz
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1 Answers1

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This happened to me as well when I installed some VM software. I first tried restart lightdm but didnt work so I reinstalled desktop and unity. First press CTRL + ALT + F1 and login to your account. This step will give a terminal.

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

After this step and restarting the machine, when I tried to login to a guest it worked fine but when I tried to login to my account it didn't let me. If this happens to you as well press CTRL + ALT + F1 and enter to your account. Enter the following command in the terminal and reboot:

sudo mv .Xauthority .XauthorityBak

then

sudo reboot

Taken from: Unity Launcher and Top Panel disappeared in 14.04 and Can't login to Ubuntu 14.04

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