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So today I woke up and couldn't log in into my user (the screen flashed and went back to the login screen), following advise elsewhere I deleted .Xauthority. Now I just get a black screen, I can only use tty's. I reinstalling unity but it also didnt work.

Edit: I installed gdm and it also doest load. It just shows the ubuntu loading screen forever.

Matías Guzmán Naranjo
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    Can you log in as an other user, e.g. the guest account? – Kai May 11 '14 at 10:45
  • No. Also I just reinstalled the whole system, and after update, exact same thing – Matías Guzmán Naranjo May 11 '14 at 11:29
  • Do you see any relevant errors in "/var/log/Xorg.0.log"? – Ian N May 11 '14 at 13:44
  • Not any more. I reinstalled once more, it might be an issue with the new login system so I'll just wait a few days before updating. – Matías Guzmán Naranjo May 11 '14 at 14:05
  • If you use btrfs for the install you can snapshot your system before the update and then rollback if it does not work. No need to re-install. Your problem sounds like [bug #1283826 lightdm hangs after updates](https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1283826) – bain May 11 '14 at 14:47
  • It does sound like it, but why would it suddenly show up? Also, is there any way around it? – Matías Guzmán Naranjo May 11 '14 at 15:07
  • My computer doesn't boot to a blackscreen. It boots to the login screen. It just gives me a blackscreen after that. – Matías Guzmán Naranjo May 11 '14 at 15:19
  • `grep "] (EE)" /var/log/Xorg.0.log` shows you the errors of the X server. `tail /var/log/syslog` displays general problems. Add some logfile output to your question, please. – mniess May 11 '14 at 19:40
  • As I said. I just reinstalled a second time. I could do the upgrade tomorrow and get the logs after it breaks again. How can I avoid reinstalling yet again if it breaks again? – Matías Guzmán Naranjo May 11 '14 at 23:28

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