Fix Login Screen Loop – Kicked Back to Login on Ubuntu

lightdmxorg

So I thought I had finally solved my woes about Cinnamon glitching out (occasionally) when trying to run full-screen games. I set up an alias for 'sudo service lightdm restart; sudo startx'. It worked a few times when something crashed or glitched and I had to ctrl+alt+f2. But now I seem to have screwed something up, because trying to log in from the lightdm login screen on 12.04 shows a familiar screen with some weirdly indented text, and then kicks me back to the login screen without explanation. I've tried removing ~/.Xauthority and then doing the same command as above, but that didn't work. Good thing I left the guest account enabled.

Any suggestions?

Shows what I get for mucking around with things I don't fully understand. But I'll try to learn from this.

Best Answer

Turns out I was only using the wrong command. When I deleted ~/.Xauthority, I needed to next run sudo service lightdm restart, without using startx. A learning experience indeed.

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Ubuntu – Login Loop – unable to run unity – not Xauthority ownership but may be related to display

Though you have given answer in your question, writing this for the record. Type ctrl + alt + F1 and login with your username at command prompt.

user@dell$ ls -l ~/.ICEauthority
-rw------- root root 3668 May 28 09:28 /home/user/.ICEauthority
user@dell$ sudo chmod 777 ~/.ICEauthority
password:
user@dell$ ls -l ~/.ICEauthority
-rwxrwxrwx root root 3668 May 28 09:28 /home/user/.ICEauthority

ctrl + alt + F7 and login worked.

Ubuntu – Login Loop on Ubuntu 18.04.1

I know this has been solved already but I had a similar issue where after updating I was stuck in the login loop. This solution is only for those that have a NVIDIA driver already installed. During the update process some how nouveau was enabled. Solution:

1) create file blacklist-nouveau.conf in /etc/modprob.d

2) Add below contents: blacklist nouveau options nouveau modeset=0

3) Regenerate the kernel initramfs with below command: sudo update initramfs -u

4) reboot

I tried so many solutions online and none of them worked. Hope this helps someone.

Best Answer

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Ubuntu – Login Loop – unable to run unity – not Xauthority ownership but may be related to display

Ubuntu – Login Loop on Ubuntu 18.04.1

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