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yesterday I have upgraded my laptop to Ubuntu 15.10 from ubuntu 15.04. After the upgrade i am unable to login, just its logged out automatically.

I have tried these three desktop all returns same results.

What is not working? 1. Gnome Classic 2. Gnome 3. Ubuntu Desktop

what I have tried? 1. Tried to re-install the ubuntu-deskop and unity 2. Created another user, didn't work 3. Tried to remove Xauthority file

Laptop Model: 1. Lenovo G50-70 / AMD A6 CPU

Mooglie
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    Press Ctrl+Alt+F1, login to that and then run startx. What happens? – Tim Oct 24 '15 at 21:36
  • This is the error i am getting.. It shows the login screen, and it logged out in few seconds
    upstart: no-pinentry-gnome3 main process (6582) terminated with status 1 upstart: upstart-event-bridge main process (6624) terminated with status 1 upstart: upstart-event-bridge main process ended, respawning upstart: upstart-event-bridge main process (6646) terminated with status 1 upstart: upstart-event-bridge main process ended, respawning upstart: Disconnected from notified D-Bus bus upstart: job url-dispatcher-refresh failed to stop     – Mooglie Oct 24 '15 at 21:39
  • try running sudo apt-get install unity ubuntu-desktop – Tim Oct 24 '15 at 21:40
  • its not working. already tried it. It works with gnome-metacity, but other desktops are not working :( – Mooglie Oct 24 '15 at 21:41
  • hmm okay if you go into gnome-metacity, then run the command ccsm (install if it needs) and then go to OpenGL and disable and then Unity and disable, then enable them both. – Tim Oct 24 '15 at 21:43
  • No, its not working..! – Mooglie Oct 24 '15 at 21:49

1 Answers1

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I guess I am a bit late to help you but this one is for anyone doing the upgrade now. I had the exact same issue.

For me the solution was to uninstall and reinstall the nvidia drivers. Note that I am here referring to the drivers installed from the nvidia website.

  • This is not for the nouveau driver
  • This is not for the nvidia-current driver

I am assuming you still have the installer (you can also download it again)

First press CTRL+ALT+F1 to open a terminal and log in. Then do the following:

sudo ./NVIDIA-Linux-x86_64-352.41.run --uninstall
sudo reboot (not sure whether needed; but I did it)

For me I ended up in an utter mess, but no worries, back to the terminal

sudo ./NVIDIA-Linux-x86_64-352.41.run
sudo reboot

This did it for me, I hope it can also help others.

W. Goeman
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