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So I just installed Ubuntu 16.04 yesterday. Today I wanted to login to the computer and suddenly it doesn't log me in anymore. I can enter my password, but when I hit return to log in the screen goes black for a second and I end up right back in the login screen again. Does someone know what could be the issue?

Gladen
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  • You have by any chance a Nvidia GPU ? – Videonauth Apr 25 '16 at 10:09
  • @Videonauth do have an NVIDIA GPU yes. And now I think of it, I did install the propriatary drivers as the last thing I did before this happened – Gladen Apr 25 '16 at 10:19
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    Then have a look here maybe this will solve your sorrows. – Videonauth Apr 25 '16 at 10:20
  • It happend with me too once I installed the nvidia driver.Then I realised its because of the driver.So, what I did is that I went to additional drivers and then rather choose xorg that fixed my problem. – bhordupur Apr 25 '16 at 10:40
  • @Videonauth Sorry for the late reaction, but that solved my problem :) Running the drivers from the PPA for now. – Gladen May 03 '16 at 20:03

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I ran into the same problem when I tried to switch to proprietary graphics driver from settings.
By default x server was in charge. Provided that you got a similar issue here, you can try to uninstall the driver.

In my case, I had Nvidia, so I went to tty1 by Ctrl + Alt + F1,
then enter login and password,
and use purge to uninstall: 

sudo apt-get purge nvidia* && sudo reboot
swift
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SMISA16
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